Forum Discussion

David_G__33241's avatar
David_G__33241
Icon for Nimbostratus rankNimbostratus
Nov 06, 2015

How to modify SMTP from-address?

I have the following SMTP Configuration: Regardless of what I have above, when I use the Email Agent in the VPE I can type anything I want in the From field and that is what will show wh...
BIG-IP Access Policy Manager (APM)
design
security
Lucas_Thompson_'s avatar
Lucas_Thompson_
Historic F5 Account
Nov 06, 2015

SMTP has two Froms, one is in the SMTP commands (FROM xxx) and the other is in the message headers (From: xxx). I think there is some way to get sendmail to read the headers to infer the "FROM" it should use, but you can just use the -f switch to set it when you call it from a script. This is more of a unix question rather than APM: The delivery agent used by APM is completely separate from sendmail.

 

Your command would then look like:

 

echo "message data here" | sendmail -f 'ops-noreply@company.com' 'recipient@company.com

 

Google "sendmail from address" for more in depth discussion on this topic and information about how different user agents need this to be formatted to display a "friendly name" part of the address. Also be sure to sanitize username input if it's from an external source, especially those usernames with apostrophes, parens, or shell script injection attacks.

 

David_Gill's avatar
David_Gill
Icon for Cirrus rankCirrus
Nov 06, 2015
It does not work for me. Even using the simplest format as you have shown above still comes out as root [root@hostname.company.com]. I tried with single quotes, double quotes, no quotes, space after the -f, no space after the -f. Does that one line sendmail command work for you?