Am I correct in my observation that SendMail, in its default configuration, does *NOT* create the X-Envelope-From and X-Envelope-To headers?
No it doesn't.
However it does create a "Return-Path" header that is the same as what would be in X-Envelope-From header, and SA knows to check the Return-Path header. (For whitelist and blacklist etc)
If so, how does one get SendMail to create them?
Ah, good question... no doubt there would be a way, but it probably involves lots of arcane hacking of rules in sendmail.cf :)
Is there any special reason you need the Envelope-Recipient ? If you run SA from the local delivery agent you already know who the recipient is when procmail is called, if you run SA from a filter like Mimedefang then there are potentially *multiple* recipients at the point the message is scanned anyway...
Regards, Simon
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