IFS 9/10 TLS1.2 smtp.office365

Hi @paguin ,

Normally, TLS1.2 is supported for office365 

Have you tried to do telnet to smtp.office365.com and on port : 587 from the IFS server to check if you are able to connect it outside IFS application? If yes, perhaps you can check the security protocol and it should be SMTP+STARTTLS 

Regards,

Anil

@paguin 

I think there could be several areas of concerns which you will have to check in order to fix this issue. To fix it faster, I suggest that you will have to open IFS case to get R&D attention + a case with Microsoft office 365 team

you will have check when this issue started and what changes has been done before that. Possible reasons could be :

=> Disabling of TLS1.0 and TLS 1.1  (but it has been ongoing for past 2 years but it depends if you were still on TLS 1.0 or 1.1)

Disabling TLS 1.0 and 1.1 for Microsoft 365 | Microsoft Learn

Preparing for TLS 1.2 in Office 365 and Office 365 GCC | Microsoft Learn

=> SSL Certificate issue 

Regards,

Anil

@surenswo 

nops 

tried all what was possible 

any one who can help here …

Regards

Pankaj

There are other community posts that might be interesting for TLS1.2

Enabling TLS 1.2 support in IFS Apps9 | IFS Community or
New opt-in endpoint available for SMTP AUTH clients still needing legacy TLS - Microsoft Community Hub

One of our customers is facing the “Could not convert socket to TLS” issue and hopefully updating to TLS1.2 and removing TLS1.0 and TLS1.1 by reconfiguring the environment will solve the issue

Best regards,
  Stefan