Forum Discussion

Nimbostratus

Apr 29, 2019

SMTP iRule and Submission Port

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 ?

[1] https://devcentral.f5.com/codeshare?sid=700

MichaelJordan_1
Nimbostratus
Apr 29, 2019
By the way, I use BIG-IP 12.1.2 and SMTP server is OpenSMTPd (shipped with OpenBSD 6.3).
Andy_McGrath
Cumulonimbus
Apr 30, 2019
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.