6 messages in net.sourceforge.lists.courier-usersRe: [courier-users] Could "550 User u...
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Jay LeeSep 14, 2007 1:17 pm 
Sam VarshavchikSep 14, 2007 3:18 pm 
Jay LeeSep 18, 2007 10:47 am 
Jay LeeSep 20, 2007 7:10 am 
Jay LeeSep 20, 2007 1:36 pm 
Sam VarshavchikSep 20, 2007 8:40 pm 
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Subject:Re: [courier-users] Could "550 User unknown." be more verbose?Actions...
From:Jay Lee (jl@pbu.edu)
Date:Sep 18, 2007 10:47:09 am
List:net.sourceforge.lists.courier-users

Sam Varshavchik wrote:

Any thoughts here Sam? Wanted to check with you before I file a bugzilla with Thunderbird. I do know that at least one other SMTP Server (Mercury/32 4.52) returns the bad address in the 550 message.

You can make an argument go either way. However, the 550 User unknown is a response to a single, specific, RCPT TO: SMTP command. The sender knows exactly which address failed.

Observe that when Courier attempts to deliver a message, and a recipient is rejected, the resulting bounce not only quotes the rejection message, but also includes whatever command caused the error.

OK, I've contacted the Thunderbird developers and they are fixing the issue in their trunk, 3.0 code but not in 2.0.x. I need something in place sooner than that though and changing Courier's error response seems to be the easier quick fix. Any hints on how to include the recipient address in the error? I've found the relevant error message in courier/module.local/local.c line 412, but I'm not sure which variable would carry the recipient address. Could anybody help with that?

Jay