Office 365 Tls Port

com, port 993, SSL/TLS enabled. Common SMTP port numbers This article refers to MailPoet 2. AppRiver Technical Guides AppRiver Microsoft Office 365 Office 365 - Exchange Admin Portal Setting up Smarthosting for O365 Setting up Smarthosting for O365 Before you proceed with this configuration, please ensure that you have ordered SmartHosting service for the affected domain(s) through our sales team or your Partner Portal. I googled a little, and it seems to me telnet cannot be used for Office 365 connections, because it's lacking the right authentication methods. com address. SSL - Click SSL to. Office 365 should be configured to use NetScaler as a third party SAML IDP (Identity Provider). To set up a new connection, start with step 1. relayhost = [mailrelay. Some terms and concepts apply to more than one TLS-related feature. Use these instructions as a general overview for connecting your Office 365 account. Method 1: Using Office 365 as the SMTP Server. 0 was released as an update to SSL 3. There is a reference article that lists the records and a short description of what each is used for here. The most straightforward use of SMTP with Office 365 requires the use of TLS (see Option 1 here). One of the array of diagnostic tests you may find yourself doing when you’re trying to fix a problem sending and receiving messages to a domain is to do a telnet on Port 25 to a mail server you maybe having a problem with and then trying to run though manually issuing the SMTP commands to send a message to this server so you can see what the responses are. Setup HP printer to send to email using Office 365 SMTP Port = 587 Setup HP printer to send to email using Office 365; Setup HP printer to send to email using. and trainer specializing in Office 365 and Exchange Server. In the Proxy Server(Address:Port) field, enter a Proxy Server address if the Unity Connection server cannot access the Office 365 servers in the cloud. In order to provide the best-in-class encryption and security to customers, Microsoft Office 365 is removing support for TLS 1. com using TLS on port 587. Setting up Outlook on Windows for Office 365 Open Outlook if it isn’t already open, you will be prompted for credentials. Office 365 Integration and Policy. POP 3 Port (TLS/SSL Only) 995 - Used for Encrypted TLS (SSL) connection to mail server to pickup emails Office 365 Recovery or Not Activated. Articles in this section. Hi I am using office 365 and I want to get office 365 outgoing smtp server and port , ssl required or not details. However, this does seem to require that the mail itself come From that user, i. TLS Session Negotiation Failed. If you have already. QuerySurge Authentication with LDAP and LDAPS; Unattended Installation - Windows & Linux v6. 0 will be decommissioned from Office 365 though, and so they will stop working at some point. If you're trying to add your Outlook. I have used smpt. My Admin notification logs says SASL authentication Failed; server smtp. Where I could get these details from office 365 admin login Pol. com endpoint). The Setup of Windows Server 2012 Essentials has a step "Set up email alert notification". TLS over port 25 for Exchange services - posted in Barracuda Load Balancer ADC: We are moving to Office 365 and have setup a hybrid environment. Since then, TLS has been the primary technology used to secure data over internet connections and SSL. 0 and announced that all clients and browsers need to utilize TLS 1. Today I will show you how to test Office 365 SMTP server using PowerShell. The company is quietly deprecating TLS 1. it is required to be properly validated and updated. in Microsoft Office 365 for enterprises or in Microsoft Office 365 Enterprise preview. Use Transport Layer Security (TLS) Office 365 requires TLS to ensure that your credentials are passed securely. I finally asked for supervisor. We are using Office 365, therefore the Exchange Server is on Cloud. COM Port Number: 587. com, Office 365 // use 587 TLS port oServer. Select Mailflow and then Connectors. we are looking to migrate to office 365, however i would like to keep email routing via on-premise iron-port appliance. 4121, as in your reply. As outlined in the article "Preparing for the mandatory use of TLS 1. Other Platforms If your email client does not support Exchange accounts, you can use the following settings: IMAP. Using IMAP to connect to your Office 365 Exchange Online mailbox synchronizes mail only. Starting on March 1, 2018 all client-server and browser-server combinations must use TLS 1. Select TLS from the drop-down list. The Select your mail flow scenario screen appears. TLS/SSL Implicit mode cannot be run on the same port as plain (unsecure) communication. I have it checked and using port 587. On port 587 nothing happens at all. Running on an outdated software versions means that users in general will not be able to get the most of any system. Today I will show you how to test Office 365 SMTP server using PowerShell. I was skeptical, based on this line from the SMTP Setup Page in the Server Admin guide: Uncheck Enable TLS so the connection to your mail server is unencrypted. (Encrypted SMTP connections are not supported for alerts or subscriptions. Supports mail sent from applications hosted by a third party No Yes Open network port Port 25 Port 587 or port 25 Requires IP whitelisting Only for public IP addresses. The app diagnoses common Outlook issues like account setup, connectivity issues, password issues, or Outlook stops responding or crashes. 4 Office 365 Integration Guide 3. com]:25 smtp_sasl_auth_enable = no smtp_tls_security_level = may smtp_sasl_security_options = noanonymous. Office 365にサインイン. Please note: This is NOT when Microsoft Office 365 will officially deprecate TLS 1. ) If placing values into "Port" field is not palatable, certainly explain which default port will be used for which protocol in help documentation. Now, save the SSL certificate file (yourdomainname. 2 are growing more common, many Exchange clients still do not work with anything but TLS 1. To do so, you have to provide Application ID and Secret Key. 0 and announced that all clients and browsers need to utilize TLS 1. Ran into a strange problem recently where an Exchange 2016 server could not send mail to Office 365 via hybrid mail flow. 0 and above. Port Gennemse e] Denne server kræver en krypteret forbindelse (SSL/TLS) Kræv logon med godkendelse af sikker adgangskode (SPA) Udgående post Server mtp. I'm somewhat sure that smtp_ssl is really SSL, not TLS as required by Office 365 anyway, so this config. Log in to the Office 365 Admin Portal. Remember also to set the right SMTP SSL port for the email transmission – normally, port 465. Enter your Office 365 / Outlook mail ID and its password. 1 or higher connection, we will deliver the email over a TLS encrypted connection. Click on the Protection menu item. 2799338 How to enable on-premises applications and devices to send mail to Office 365 users. Posted by Elvin C, Last modified by Joseph O'Donnell on 11 September 2019 11:03 AM. Assuming you receive mail from the Internet, there must be something that's accepting non-TLS mail, perhaps a Internet Gateway or firewall. We are also using Office 365 and have successfully connected. Record the SMTP Settings for your account Setup the MFP with your Office 365 account. If you do not have a Mail Basic account, please reference the setup guides for Mail Business, Microsoft Exchange 2013 and Microsoft Office 365. You can find them below or by going to POP and IMAP settings in Outlook. Nprinting SMTP Mail Settings Office 365 Port: 587 check "use TLS (transport secure layer)" Username: the user (e-mail adress) you use for sending mails via O365. I do prefer not customizing Bugzilla as much as possible and would therefore prefer some local sendmail or such taking care of forwarding mails to Office 365. Email sent from Office 365 to external (internet) routes through on-prem ESA and normal content filter,outbound mail policy and DLP policy applies. TLS Session Negotiation Failed. This post explains this recent issue and what was done to fix it. (Encrypted SMTP connections are not supported for alerts or subscriptions. Anyhow, I am able to login to the mail account. 4 so we could use Office 365 e-mail with Track-It when we transitioned over. 0 or higher to connect to Office 365 services without issues. It seems there is some confusion about what actually constitutes a relay, so let's start off with trying to determine if you actually need to relay with Office 365 and then we'll get into the options. I still need help. Open the Exchange Admin Center. microsoftonline. Fortunately it’s easy to use PowerShell to accomplish the same thing. I have done the following: I created an SMTP Relay from a partner. Latest Office 365 version For. Operating System: Windows 7 Professional, 64-bit, 8GB RAM. Where I could get these details from office 365 admin login Pol. I could be wrong but I did some research and it said that since 365 uses TLS authentication that send-mailmessage does not work. To add MX records, navigate to Home > Domains. Could there be a firewall or port issue with the draytek router? Any other suggestions appreciated thanks. com 587 TLS In. This is extremely important due to the inherent vulnerabilities in SSL and TLS version prior to 1. How do I add SRV records for Office 365? Note: Office 365 is a 3rd party product, and the info in the records might change, so please check your settings with Microsoft. 2 in Office 365", this is going to present a problem if your organization is still using Windows 7/Vista clients. com Calendar for Windows 10Outlook 2019 for Mac Outlook Calendar for Windows 10 Outlook for iOS and AndroidOutlook for Windows Phone 10. In order to send an email from PowerShell, we will need to specify an SMTP Server. In this article, you've learned how to create a TLS and non-TLS Office 365 SMTP relay. If so, the device or LOB application does not use Office 365 to send the mail, but the mail is received by Office 365 for delivery to your Office 365 accounts. This is an excellent PowerShell script if you want to test which SSL and TLS protocols are enabled on your webserver. Login as Admin 3. You’ll end up with Office 365 specific Receive and Send connectors after setting up your Hybrid configuration using the Hybrid Configuration Wizard (or manually). Click on Accounts and then Choose Email. Generally speaking, the port for SSL is 465, and the port for TLS is 587, but this is not always the case. Here are the ports from the deployment guide (note: these are subject to change so refer here to the latest Port and IP list): *SMTP Relay with Exchange Online requires TCP port 587 and requires TLS. Printable View This tutorial will guide you through configuring Office 365 on iOS devices. You can set your email client to access your Office 365 account using either Exchange or Internet Message Access Protocol (IMAP) settings. password password. com 2) Port: our_port_no. com as the mail server and 587 as the port number. This will appear as the sender of the message. Can that be done? without encrypting from every account that is being relayed. How to test SMTP server using PowerShell:. We begin with outbound SMTP flow where TaskCentre is required to send email though Office 365 hosted facilities. This article has been migrated to our Help System. So if telnet is internally used in PRTG, it will never work with Office 365. But that's up to you in the end. Check out our Windows-certified applications for Microsoft messaging platforms. This page provides links to documentation on how to configure your email client to access Office 365. Both are equally secure. This how to guide details the settings required to use Office 365 for SMTP on a Sharp device. You should transition to accessing the data in JSON format as described at http://aka. 0 or higher to connect to Office 365 services without issues. You’ll end up with Office 365 specific Receive and Send connectors after setting up your Hybrid configuration using the Hybrid Configuration Wizard (or manually). I can receive emails, but cannot send emails. The company is quietly deprecating TLS 1. Leave a comment if you need any help or clarification. In this tutorial we show you how to configure your Konica Minolta bizhub for scan to email using the office 365 email server. NET (C# / VB. Some domains do not receive emails from my organization when we send it through the ironport. 1 in Office 365 and Office 365 GCC as of June 2020. Big trouble, isnt it? First step – Bringing up an standard SMTP server. com requires. Customers can purchase Office 365 in many ways, depending on the needs of the organization. Enter Your Email address, Password and Display name – Click Next. 1 or higher when attempting to deliver email. Microsoft Office 365 What is Office 365? Microsoft's Office 365 is a subscription based service providing access to both online and offline versions of their office programs and services. 3) to be able to connect to Office 365 services without issue. Yes, Office 365 supports both POP3 and IMAP. The most straightforward use of SMTP with Office 365 requires the use of TLS (see Option 1 here). Latest Office 365 version For. Establishing an SSL or TLS connection with Exchange Online; Granting your Sage CRM SMTP user the SendAs right so that it can send out emails as Sage CRM users. Today I will show you how to test Office 365 SMTP server using PowerShell. Please note: This is NOT when Microsoft Office 365 will officially deprecate TLS 1. / Configuring the TLS Certificate Name for Exchange Server Receive Connectors. Log in to the Office 365 Admin Portal. Some terms and concepts apply to more than one TLS-related feature. Hello, We have 2 Ironport appliances we want to enble TLS on. it is required to be properly validated and updated. Exchange Online Protection (EOP) is one of the service offerings that is included with all of the e-mail services and suites, but it may be purchased separately. com, Office 365 // use 587 TLS port oServer. I have *tried* (unsuccessfully of course or I wouldn't be writing this) to configure "direct send" but haven't been able to get that to work either. If your ISP has blocked this, you can manually change this from the Machine directly. This article has been migrated to our Help System. I have recently got a new laptop with Windows 10, using Office 365 (Outlook 2016) installed. Note: When asked for your user ID use the format [email protected] Configuring Thunderbird for Windows for Office 365 UPDATED 10/17/2015 To verify or change an existing Thunderbird setup, skip to step 10. This provides end-to-end encryption of emails between your on-prem Exchange Hybrid Server and Exchange Online Protection (EOP), just like they were the same organization. 1 protocols used with Office 365 services by the end. Exchange servers mostly work on 578 port and use TLS instead of SSL. This article looks at how to configure mail flow from Office 365 (via Exchange Online Protection – EOP) to your On Premises organization to ensure that it is highly available and work in disaster recovery scenarios with no impact. Because 2525 is a non-traditional high port number, it is typically allowed on consumer ISPs and Cloud Hosting providers, like Google Compute Engine. A gmail email address works fine so its something to do with exchange/365. osTicket comes packed with more features and tools than most of the expensive (and complex) support ticket systems on the market. The entire Landscape is over Microsoft platform (Windows 2008 R2 64bit). 1 connections. I explored and then I thought I should document for others 🙂 Ports Used by Office 365 Following. Double check your configuration. If you have already. Setting up Exchange to work with Office 365. Note: When asked for your user ID use the format [email protected] Use the Office 365 service to relay mail outside of your domain Regardless if YYYY. / Configuring the TLS Certificate Name for Exchange Server Receive Connectors. Note: By enforced, I mean it requires TLS which is more strict than opportunistic TLS, which will attempt to set up TLS before continuing with regular SMTP communications. In order to provide the best-in-class encryption and security to customers, Microsoft Office 365 is removing support for TLS 1. To my surprise TLS encryption is not an option and since TLS encryption is required by Office 365 we need to create a SMTP Relay before finishing this step. com are not working with an APC Network Management Card enabled device or need to be set up for the first time; local mail server is not available to relay mail to an external service. Hosts have a tendency to block some of them. I have logged into their Office 365 account, and found that the required settings for PHPMailer are: Host: smtp. Can that be done? without encrypting from every account that is being relayed. The implicit SSL/TLS port is 465. You can find them below or by going to POP and IMAP settings in Outlook. Moreover, you can configure it without any preparation – if you can use any SMTP server working on port 25 or 465 (with SMTPS). No, but requires a service account. The Office Online Server receives this request including the Access Token, File ID and File location (file share) from the Skype for Business Clients and access the PowerPoint file by contacting the Skype for Business Content File Store via Skype for Business Frontend Server (Skype for Business Web Services FQDN will also be present in the initial Request). for example to ensure that TLS. com account to another mail app, you might need the POP, IMAP, or SMTP settings for Outlook. To check whether SSL/TLS configuration is enabled, enter "https://(the machine's IP address or host name)/" in your Web browser's address bar to access this machine. Encryption method: TLS or STARTTLS. com, your device (printer, router, UPS, whatever) must send notification emails from that same [email protected] In this previous post we explained how to install and configure a FTP server in Linux CentOS 7 using the popular VSFTPD open-source package. Starting on March 1, 2018 all client-server and browser-server combinations must use TLS 1. If you do a Google search for "change canon smtp port" you will find plenty of resources on this. To ensure messages delivered from us to Office 365 aren't incorrectly identified as spam, resulting in delayed or failed email delivery, our service IP Ranges must be added to the allowed list in Office 365's Connection Filtering Policy. Connecting to your Office 365 for business or. Place with IMAP, SMTP, POP3 server settings for GoDaddy which will allow you to setup any email client to access your messages. Office 365 hybrid configuration verification and tweaking. I have set the expected values given to me by Office 365: SMTP setting Server name: smtp. The customers SMTP is on the cloud, uses TLS over 587 TCP port and just accepting autenticated connections. With TLS Wrapper, the Amazon SES SMTP endpoint does not perform TLS negotiation: it is the client's responsibility to connect to the endpoint using TLS, and to continue using TLS for the entire conversation. The most straightforward use of SMTP with Office 365 requires the use of TLS (see Option 1 here). TCP Port 587 or 25 must be open to Office 365 from the client. Log in to the Office 365 Admin Portal. Simplify email encryption for Office 365. I got lucky and was able to get both in two separate but same requests. , iPhone or iPad) to Office 365 by following the instructions below. com Port: 587 Encryption method: TLS in the Advanced Parameters - E-mail screen and running a test gives the followin. Click Settings | Options. This is extremely important due to the inherent vulnerabilities in SSL and TLS version prior to 1. com, port 587, SSL Yes and default timeout of 100000 ms. " For details, contact the Internet service provider or the network administrators. Actually our company changed SMTP server and blocked all open default port which wasn't allowing us to send a mail. Record the SMTP Settings for your account Setup the MFP with your Office 365 account. SMTP configuration for Office 365. Note: When asked for your user ID use the format [email protected] I ran into a strange issue recently where I could not get a Konica Minolta Bizhub multifunction network scanner to send scans to email using office 365. Use this page to configure the LDAP server to look up email addresses stored on the network. Enter your [email protected] Office 365 SMTP server uses 587 port and explicit SSL (TLS) connection. Choose Which Email/Calendar App to Use (with Office 365) This article applies to: Email for Faculty and Staff Please note that your college, unit, or department may require that you use a particular method to access your Cornell email and calendar. A gmail email address works fine so its something to do with exchange/365. I see this most often with customers who use 365's hosted exchange for their email, because 365 requires that connections be established over a TLS encrypted port. It is possible to use Office 365 as your Email Relay server. com) SMTP relay empowers Office 365 to relay emails on your behalf by using your public IP address (or a certificate) to authenticate Office 365. Using Exchange Online (Office 365) You can use Exchange Online as an SMTP and POP server with Sage CRM. As you work with this functionality, you need to learn about some TLS-related features and functionality. If the virtual server or a remote domain is configured to use TLS email will not be sent if the remote domain does not support TLS. If instructions aren't listed for the program you're using, the following information may help you set up your email. I recently migrated a customer from SBS 2008/Exchange 2007 to Office 365 with AppRiver and BitTitan's MigrationWiz tool. Log in to the Office 365 admin portal with an administrative account. However, OfficeScan currently supports SSL, but not TLS. For guidance on how. This provides end-to-end encryption of emails between your on-prem Exchange Hybrid Server and Exchange Online Protection (EOP), just like they were the same organization. I checked the settings and found that the SMTP settings are as follows: Server name: smtp. Other Platforms If your email client does not support Exchange accounts, you can use the following settings: IMAP. Customers can purchase Office 365 in many ways, depending on the needs of the organization. For Office 365 SharePoint the header is 16. YOU can only authenticate via SSL (TLS). The app diagnoses common Outlook issues like account setup, connectivity issues, password issues, or Outlook stops responding or crashes. All works Great. Our SMTP server is set to smtp. Office 365 is now the most popular enterprise cloud service by user count and Microsoft is just getting started. Based on the analysis results, you can confirm that the message did pass through the Office 365 SMTP relay as intended. Enter your [email protected] , you must set the SMTP sending port number to "587. Send email using SMTP STARTTLS. In order to provide the best-in-class encryption and security to customers, Microsoft Office 365 is removing support for TLS 1. Use TLS: checked. com port 587) and the username and password into the relevant boxes but all that happens is I get the message "Unable to connect". Since then, TLS has been the primary technology used to secure data over internet connections and SSL. com (Formerly smtp. 3-P8CPE-FP003. com ) · The Printers email address needs to be valid office 365 email General question would be: 1. If you use TLS protocol, set the Gmail SMTP Port number as 587 instead of 465 which is the Gmail SMTP Port number used for SSL. Select Partner Organization from the From: field. Encryption method: TLS or STARTTLS. com Calendar for Windows 10Outlook 2019 for Mac Outlook Calendar for Windows 10 Outlook for iOS and AndroidOutlook for Windows Phone 10. Office 365 REQUIRES a TLS based connection on port 587 (standard TLS port) to relay email to users outside of your Exchange organization. The settings in here will need to be configured properly to point to Office 365. Once you configure the connector, any Internet mail that does not originate from this IP address range will be rejected by Office 365. Starting on March 1, 2018 all client-server and browser-server combinations must use TLS 1. There will be no support for older TLS versions 1. You should transition to accessing the data in JSON format as described at http://aka. I am having problems with my BT emails. Open the Exchange Admin Center. us should get it delivered regardless of the internal handling for TLS, etc. org > Articles > 1. Issue Popular email services such as Gmail, Yahoo!, Office 365, and Hotmail/Outlook. Generally speaking, the port for SSL is 465, and the port for TLS is 587, but this is not always the case. com ) · The Printers email address needs to be valid office 365 email General question would be: 1. Here are Microsoft's recommended settings for Office 365's email service. com, both retrieved using SSL just a few minutes ago. Luckily, there is an easy PowerShell cmdlet called "Send-MailMessage" that allows you to send an email with Exchange Server. Port 2525: This port is not endorsed by the IETF nor IANA. SSL/TLS: Start TLS. This will appear as the sender of the message. Below we create an Exchange 2013 send connector that sends email to a particular domain, this TLS send connector works alongside your normal Internet send connector but when email is sent to this particular domain it is encrypted. com SMTP Port : 587 Client ID: Your Office 365 account application ID Secret Key: Your Office 365 account secret key Encryption: TLS. 1) SMTP Server: ourSMTP. You should transition to accessing the data in JSON format as described at http://aka. How to set up Scan To Email for Office 365. turboSMTP can work both on port 587 and 465, but also on 2525 and 25025. SMTP with TLS is there but our applications supports only SSL. I still need help. SMTP relay settings for Office 365 To configure an SMTP relay in Office 365, you need the following: A user who has an Exchange Online mailbox The SMTP set to port 587 Transport Layer Security (TLS) encryption enabled The mailbox server name. 1 as of October 31, 2018, which may weaken protocols and affect printer connectivity to Office 365. The rest of this article describes how to have email generated by 3CX sent using SSL / TLS on older versions. So Outlook is configured to connect to POP3 on localhost on port 110 and port 25 is used to send mail. Requirement: Your on-premises domain must be added as an accepted domain in Office 365. We recently had to fix a Konica scan to office 365 issue because of a security tweak Microsoft made so I figured I would share my findings with you, my adoring public. Same mail accounts boxes are already setup in Office 365, however the problem is that all messages sent form the webpage mail form are routed locally - only on the droplet mail server itself since the domain name and mail accounts are both identical on my Linux box and Office 365. Enter your Office 365 / Outlook mail ID and its password. The difference between implicit SSL and explicit SSL is that for implicit, the SSL handshake begins immediately after establishing the TCP socket connection. Several emails a day are always sent and received on the minute as expected. Select case type “Limits and Feature Activation. QuerySurge Authentication with LDAP and LDAPS; Unattended Installation - Windows & Linux v6. The Office 365 requires Transport Layer Security (TLS) for Client SMTP Submission to provide a secured communication. com smtp_port = 587 smtp_auth = tls smtp_username = [email protected] Note: Not all Office 365 resellers offer SMTP. Select Partner Organization from the From: field. This post covers how to configure the HP Officejet 8600 to scan to email directly via Office 365. You can send out email notifications from PRTG with Office 365 as SMTP relay server if you do not want to use the built-in SMTP relay server for direct email delivery. Can I use a different port (than 25) for my Office 365 Exchange Online Protection to my on premise server? My ISP is blocking port 25. If you’re using Office 365 for business or other Microsoft Exchange-based email, you can find your Post Office Protocol 3 (POP3) and Internet Message Access Protocol 4 (IMAP4) server settings by using Outlook Web App. Problem: Trying to use SMTP relay on clearpass with smtp. Log into Outlook Web Access (OWA) at login. Supports mail sent from applications hosted by a third party No Yes Open network port Port 25 Port 587 or port 25 Requires IP whitelisting Only for public IP addresses. This is a big improvement over the older Wave 14 Office 365 which dealt with spam in an entirely different system called FOPE – which most tenants did not get access to. Office 365 is now the most popular enterprise cloud service by user count and Microsoft is just getting started. This site uses cookies for analytics, personalized content and ads. 2 as default in Powershell. To ensure messages delivered from us to Office 365 aren't incorrectly identified as spam, resulting in delayed or failed email delivery, our service IP Ranges must be added to the allowed list in Office 365's Connection Filtering Policy. The selection of TLS would modify the "Port" entry to the standard default of 587. I was skeptical, based on this line from the SMTP Setup Page in the Server Admin guide: Uncheck Enable TLS so the connection to your mail server is unencrypted. You can configure Office 365 with OAuth Authentication. Also for testing we tried configuring Office 365 on Outlook 2010 mail client, SMTP is working fine with settings smtp. Record TTL IN Record Type Priority Weight Port Hostname. “ This doesn’t mean Office 365 will block TLS 1. There are a number of versions providing access for home users, small business and larger businesses and organizations. 0 devices will spontaneously combust, and they may continue to work for a while afterwards. SMTP relay lets Office 365 relay emails on your behalf by using your public IP address (or a certificate) to authenticate Office 365. Additional information can be found in:. To improve the overall security Microsoft Office 365 will disable support for TLS 1. The rest of this article describes how to have email generated by 3CX sent using SSL / TLS on older versions. For SSL to take place over these connection types, the mail client and mail server must both be configured to use the proper ports, and a valid SSL certificate must be installed on the server.