Setting envelope sender

[gurdi]

I’m running software which allows users to send E-letters to their customers and define “From” and “Reply-to” on every individual E-letter. The problem is that postfix sets apache@mydomain.com as the Envelope Sender. How can I change this, envelope sender should have the same value as “From” –field? Now users don’t get information of bounced messages so I need to find some kind of a solution. What should I change in the postfix config?

 

[jkupski]

I would not change the postfix config, but rather the application. What is your app doing to send mail? Calling the mailx command from a script?

 

[gurdi]

Application runs on PHP and uses mail() function to send mails. sendmail_path is set as /usr/sbin/sendmail -t -i

Changing the application is the last option since the company which has made the app refuses to change it. I could do the altering manually (since it is PHP) but then I would have to do the same operation all over again after updating the software (and we have many installations of that app).

 

[jkupski]

PHP's mail() function lets you specify additional sendmail parameters (5th argument.) You could solve your problem adding ",-f $WHATEVER_SENDER_ADDRESS_VARIABLE_IS" to the invocation of mail(). Talking your vendor into making this change should not be that hard...

Your only other alternative, that I know of, would involve sender_canonical_maps. I believe this would be a much larger headache than the above.

 

[gurdi]

I am familiar with PHP's mail() functions 5th argument and I have already used it some projects. This was the way I used it then:

$5th_param = "-F".$sender." -f".$sender;

I indirectly asked the vendor to consider the possibility of adding an option of using this 5th param to their software. Maybe I'll have to be a little bit more direct since they told me to change my postfix configurations. That's why I am lurking around forums to find some kind of answer...

 

[jkupski]

Understood, and I wish you the best of luck.