On Fri, May 28, 2010 at 08:52:04PM -0400, Wietse Venema wrote: > Keld Simonsen: > > Hi > > > > I am running majordomo with postfix for a number of email list, and I > > have some trouble tracking down bounces. I thought that if I could have > > some > > customized Received: headers with the envelope receiver logged > > eg by "for <user>" then I would be able to track some mutating adressees. > > Seems like some postfixes do that, but mine does not. > > I could not find something on it in the documentation or via google. > > Postfix logs "Received..for <recipient>" only if there is exactly > one recipient. Otherwise there would be a privacy violation of > BCC recipients, including the addresses of mailing list members. > > > is there a way to customize the "received:" header? > > That would be a mistake with multi-recipient mail. > > > Are there other best practices for tracking down bounces for majordomo > > with postfix? Maybe having separate message ids per individual recepient? > > It's trivial with MTAs that implement standardized RFC 3462 style > delivery status notifications. That's Postfix, Sendmail, and many > other systems. > > With non-standard MTAs such as exim and qmail, it takes a bit of > creative scripting. > > Another approach is to use VERP which sends one message per > recipient and encodes the recipent in the bounce address. > > See http://www.postfix.org/VERP_README.html
I am trying the VERP way, and have a little difficulty to understand what to do. I understand that there are two phases in the setup: 1. have sendmail generate an extended reply address, with the recipient added to the reply address, after a delimiter, which by default is "+" . the recepient address is added with the '@' replaced with '0'. this is activated by adding the -XV option to sendmail (using default values). Default values cover the rest. 2. when mail bounces, then have postfix forward the reply address owner+recepient=domain....@site.tld to ow...@site.tld . this is activated in main.cf by the line recipient_delimiter = + and then the rest is done by default. My question is where do I set up the -XV option to sendmail. I sometimes just use an include in the alias file for a bigger list, and sometimes I use majordomo. For majordomo I am using wrapper in the alias file. majordomo has a number of instances in diverse files in /home/majordomo that either invoke /usr/sbin/sendmail or /usr/lib/sendmail Where to add -XV ? For the non-majordomo lists - where do I invoke sendmail -XV ? best regards keld
