SMTP iRule and Submission Port

Question

Hi&nbsp;
I'm trying to deploy smtp service on F5 and POPs, IMAPs and SMTPs (TCP 25) works fine. I just got stuck with submission port on TCP 587. Can not use STARTTLS extension. There is an irule [1] which is suppose to be cure same problem with SMTPs. Looks like people use that iRule and solved the "STARTTLS" issue. Can anyone confirm this irule whether works with submission port as well ?&nbsp;
[1] https://devcentral.f5.com/codeshare?sid=700&nbsp;

michaeljordan_1 · Answer

By the way, I use BIG-IP 12.1.2 and SMTP server is OpenSMTPd (shipped with OpenBSD 6.3).&nbsp;

andy_mcgrath · Answer

See the following for a basic STARTTLS iRule that works well - CODE SHARE - SMTP Start TLS
Set this on your Virtual Server listening on port 587.

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SMTP iRule and Submission Port

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