Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Thomas_Walker_1's avatar
Thomas_Walker_1
Historic F5 Account
Jan 06, 2005

Can we use an iRule to dispatch SMTP messages?

I have a request to route mail messages based on the RCPT TO: field. Is there a reliable way in v9 to collect enough of the initial mail transaction so we may read the RCPT TO: portion and send the e...
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Terje_Gravvold's avatar
Terje_Gravvold
Icon for Nimbostratus rankNimbostratus
Jun 14, 2006
Hi,

 

 

I wonder if you could bother to take a look at my post:
http://devcentral.f5.com/Default.aspx?tabid=28&forumid=5&postid=8410&view=topic (Click here)
I think this iRule will do something simular to what you request. What I think could be a problem is that one e-mail transaction can have many RCPT TO: commands which must be routed to separate servers/mailboxes. In our case we are happy if we can loadbalance "right" in 80% of the cases but that might not be your case.

 

 

Please give me a hint if you have comments, suggestions for better functionality/code etc.

 

 

Best regards

 

Terje Gravvold