In case anyone else hits this problem, my issue was as follows: 1. 'owner_request_special' was enabled (by default)
2. My MySQL-based 'alias_maps' succeeded for all addresses, including those with an 'owner-' prefix. This was by design, as the query is dynamic--intended to parse addresses and convert them into a command used by our trouble ticketing system, Request Tracker. I was using 'local_recipient_maps' to control the addresses accepted by Postfix but I was not aware of the check done for 'owner-' addresses even though they aren't explicitly in the local_recipient_maps table. After setting 'owner_request_special' to 'no', everything the 'owner-' prefixes are gone. Damon -- Damon T. Miller Director of Application Services Thinking Phone Networks da...@thinkingphones.com 617-649-1388 (Office) > -----Original Message----- > From: owner-postfix-us...@postfix.org [mailto:owner-postfix- > us...@postfix.org] On Behalf Of Damon Miller > Sent: Wednesday, February 04, 2009 4:23 PM > To: postfix-users@postfix.org > Subject: Guidance on "owner-" prefix added to From and Return-Path > > Hi all, > > I'm having a difficult time understanding why one of my machines is showing > modified "Return-Path" and "From" headers while another is not. > I'm hoping someone can point me in the right direction. Here's the > environment: > > Two CentOS 4 servers, both running the same version of Postfix (2.2.10). > This was installed via binary RPM so I'm certain the Postfix build is > identical. > > > > My issue is this: When mail is sent to one of the servers ('cam-d3'), the > "From" header is modified to have "owner-" prefixing the actual address > from which it was sent. Similarly, "Return-Path" is updated to include an > "owner-" prefix. This is not happening on the other server > ('imps') and I have no idea why. > > > > I don't know what information would be relevant here so here are some > selected data points (taken from root's 'mbox' and live configuration > data). First, I've attached an example of a message sent to an address on > the machine which adds "owner-". Here are abbreviated headers showing the > "From" and "Return-Path" changes: > > From owner-dtmtest-...@helpdesk.thinkingphones.com Wed Feb 4 14:35:04 > 2009 > Return-Path: <owner-dtmtest-...@helpdesk.thinkingphones.com> > X-Original-To: dtmtest-...@helpdesk.thinkingphones.com > Delivered-To: r...@helpdesk.thinkingphones.com > > [cut -- see attached "cam-d3.txt" for full headers] > > From: "Damon Miller" <da...@thinkingphones.com> > To: <dtmtest-...@helpdesk.thinkingphones.com> > X-OriginalArrivalTime: 04 Feb 2009 19:35:08.0941 (UTC) > FILETIME=[B04D53D0:01C986FF] > Status: RO > > The address is an alias to root and the "owner-" prefix is added regardless > of source address. > > > > Contrast this with a message sent to an address on the other machine: > > From testacco...@gmail.com Wed Feb 4 09:30:44 2009 > Return-Path: <testacco...@gmail.com> > X-Original-To: thinkingphones-supp...@thinkingphonenetworks.com > Delivered-To: r...@thinkingphonenetworks.com > > [cut -- see attached "imps.txt" for full headers > > From: Damon Miller <testacco...@gmail.com> > To: thinkingphones-supp...@thinkingphonenetworks.com > Content-Type: multipart/alternative; > boundary=0015174bdfd82a282d046218a2f3 > Status: RO > > > > I'm quite confused by this. The "owner-" prefix is similar to a VERP > address, but I can't find any VERP-related configuration settings enabled > on either server. > > > > I also dumped the full configs on both servers via 'postconf' and diff'ed > them. There are three differences: > > 1. alias_maps on the server adding "owner-" contains an additional MySQL- > based alias_maps entry, but since I'm using a hash-based entry for my test > this should not be hit. (Testing confirms this.) > > -alias_maps = hash:/etc/postfix/maps/hash/aliases > +alias_maps = hash:/etc/postfix/maps/hash/aliases, > mysql:/etc/postfix/maps/mysql/mysql-alias-maps.cf > > > 2. local_recipient_maps is using a hash instead of a MySQL for > local_recipient_maps. (MySQL isn't installed on one of the hosts.) The > content is identical between the hash file and the MySQL table. > > -local_recipient_maps = proxy:unix:passwd.byname > hash:/etc/postfix/maps/hash/local-recipient-maps > +local_recipient_maps = proxy:unix:passwd.byname > mysql:/etc/postfix/maps/mysql/mysql-local-recipient-maps.cf > > > 3. 'mydomain', 'myhostname', and 'mynetworks' differ since the servers are > listening serving different domains, have different hostnames, and are on > different networks. These all match the OS-level configuration data. > > > > Any guidance would be much-appreciated. > > > Regards, > > Damon
