postfix address re-write

Paavo · 03-29-2011, 08:28 AM

Hi,

I have a server which runs postfix. The same physical server is running web and mail services for several (3) domains, which I have reserved for future use (nothing serious or valuable, just freetime activities).

Server "physical" address (also static IP) is myhost.domain.com. Lets say the other domains it serves are first.fi, second.net ad third.com. I can receive mails OK sent to all of these, I have added those 3 "extra" domains to the mydestination line in main.cf.

Sending e-mails also works fine, but the sender is user@myhost.domain.com.

I want the sender to be firstname@first.fi

I tried setting sender_canonical_maps = hash:/etc/postfix/sender_canonical in main.cf, and sender_canonical contains:

user1 Firstname1@first.fi
user2 Firstname2@first.fi

and I run postmap /etc/postfix/sender_canonical, and e-started postfix.

But if I send e-mail as user1, the sender becomes Firstname1@myhost.domain.com, so it re-writed the username part, but hot the hostname/domain part.

I also tried setting smtp_generic_maps = hash:/etc/postfix/generic but the results were similar.

What do I need to do to re-write sender for user1 (regardless of host/domain) to Firstname1@first.fi?

-Paavo

Berhanie · 03-30-2011, 11:12 AM

why don't you just set the sender address in the client?

Reuti · 03-31-2011, 05:35 AM

Can you check what was replaced when by lokking at the various logfiles of postfix? For me it's working, but I'm using a regexp instead of a hash.

Noway2 · 03-31-2011, 07:40 AM

I would look here: http://www.postfix.org/ADDRESS_REWRITING_README.html. The top part of the page says that you can rewrite the host and domain, and I assume that the article discusses how.

Paavo · 03-31-2011, 03:32 PM

Quote:

Originally Posted by Berhanie

why don't you just set the sender address in the client?

But I have tried this... somewhat.

This might not be an postfix problem, since outlook sends mails with Firstname1@first.fi as sender,
outlook configuration is Name = "Firstname Familyname" and E-mail-address = "Firstname1@first.fi".
So outlook works just like it should

BUT, if the client is SquirrelMail, and Optios -> Personal Information Full Name is empty and
also E-mail Address is empty, the "final" sender is user1@myhost.domain.com (like it should be);
SM uses user1@localhost as sender, but it gets "translated" to user1@myhost.domain.com somewhere.

If I configure SM Full Name = "Firstname Familyname" and E-mail-address = "Firstname1@first.fi",
then the final sender becomes Firstname1@myhost.domain.com. Relevat part of /var/log/maillog:

Quote:

Mar 31 23:20:50 myhost sendmail[17580]: xxx: Authentication-Warning: myhost.domain.com: apache set sender to Firstname1@first.fi using -f
Mar 31 23:20:51 myhost sendmail[17580]: xxx: from=Firstname1@first.fi, size=538, class=0, nrcpts=1, msgid=<aaa.squirrel@myhost.domain.com>, relay=apache@localhost
Mar 31 23:20:51 myhost postfix/smtpd[17581]: connect from myhost.domain.com[127.0.0.1]
Mar 31 23:20:51 myhost sendmail[17580]: STARTTLS=client, relay=[127.0.0.1], version=TLSv1/SSLv3, verify=FAIL, cipher=DHE-RSA-AES256-SHA, bits=256/256
Mar 31 23:20:51 myhost postfix/smtpd[17581]: yyy: client=myhost.domain.com[127.0.0.1]
Mar 31 23:20:51 myhost postfix/cleanup[17585]: yyy: message-id=<aaa.squirrel@myhost.domain.com>
Mar 31 23:20:51 myhost sendmail[17580]: zzz: to=someone@testmail.com, delay=00:00:01, xdelay=00:00:00, mailer=relay, pri=30538, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (Ok: queued as bbb)
Mar 31 23:20:51 myhost postfix/qmgr[17573]: bbb: from=<Firstname1@myhost.domain.com>, size=993, nrcpt=1 (queue active)
Mar 31 23:20:51 myhost postfix/smtpd[17581]: warning: network_biopair_interop: error reading 5 bytes from the network: Connection reset by peer
Mar 31 23:20:51 myhost postfix/smtpd[17581]: disconnect from myhost.domain.com[127.0.0.1]
Mar 31 23:20:51 myhost postfix/smtp[17586]: bbb: to=<someone@testmail.com>, relay=mailsrv.someisp.fi[210.220.230.240]:25, delay=0.3, delays=0.13/0/0.11/0.06, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 808DA5D802D)
Mar 31 23:20:51 myhost postfix/qmgr[17573]: bbb: removed

So SM is using sendmail. Do I need to tell sendmail it's OK to send mails from first.fi domain?

-Paavo

Berhanie · 03-31-2011, 04:07 PM

it's a little unusual, running both sendmail and postfix. what's the reason for that?

Paavo · 04-01-2011, 12:43 AM

Quote:

Originally Posted by Berhanie

it's a little unusual, running both sendmail and postfix. what's the reason for that?

I also have Dovecot IMAP server running in this, outlook uses that. Not sure if SM uses sendmail directly or via Dovecot?

-Paavo

Paavo · 04-01-2011, 12:46 AM

Hi,

here is received message header, when the message is sent from outlook:

Quote:

Return-Path: <Firstname1@first.fi>
X-Original-To: someone@testmail.com
Delivered-To: receiverrealusername@mailfront.someisp.fi
Received: from myhost.domain.com (unknown [110.120.130.140])
by mailfront.someisp.fi (Postfix) with ESMTP id xxx
for <someone@testmail.com>; Thu, 31 Mar 2011 hh:mm:ss +0300 (EEST)
Received: from myclient (myclient.wipsl.com [110.120.130.141])
by myhost.domain.com (Postfix) with ESMTPS id xxx
for <someone@testmail.com>; Thu, 31 Mar 2011 hh:mm:ss +0300 (EEST)
From: "Firstname Familyname" <Firstname1@first.fi>
To: <someone@testmail.com>
Subject: zzz
Date: Thu, 31 Mar 2011 hh:mm:ss +0300
Message-ID: xxx
MIME-Version: 1.0
Content-Type: text/plain;
charset="us-ascii"
Content-Transfer-Encoding: 7bit
X-Mailer: Microsoft Office Outlook 12.0
Thread-Index: Acvv20bt7DJUdfmmSteBIOZZp8ksjw==
Content-Language: fi
x-cr-puzzleid: {bbb}
x-cr-hashedpuzzle: <<<very long line removed>>>

And here is received message header, when the message is sent from squirrelmail:

Quote:

Return-Path: <Firstname1@myhost.domain.com>
X-Original-To: someone@testmail.com
Delivered-To: receiverrealusername@mailfront.someisp.fi
Received: from myhost.domain.com (unknown [110.120.130.140])
by mailfront.someisp.fi (Postfix) with ESMTP id xxx
for <someone@testmail.com>; Thu, 31 Mar 2011 hh:mm:ss +0300 (EEST)
Received: from myhost.domain.com (myhost.domain.com [127.0.0.1])
by myhost.domain.com (Postfix) with ESMTPS id xxx
for <someone@testmail.com>; Thu, 31 Mar 2011 hh:mm:ss +0300 (EEST)
Received: (from apache@localhost)
by myhost.domain.com (8.14.4/8.14.4/Submit) id xxx;
Thu, 31 Mar 2011 hh:mm:ss +0300
X-Authentication-Warning: myhost.domain.com: apache set sender to Firstname1@first.fi using -f
Received: from 110.120.130.140
(SquirrelMail authenticated user user1)
by myhost.domain.com with HTTP;
Thu, 31 Mar 2011 hh:mm:ss +0300
Message-ID: xxx
Date: Thu, 31 Mar 2011 hh:mm:ss +0300
Subject: yyy
From: "Firstname Familyname" <Firstname1@myhost.domain.com>
To: someone@testmail.com
User-Agent: SquirrelMail/1.4.21-1.fc14
MIME-Version: 1.0
Content-Type: text/plain;charset=iso-8859-1
Content-Transfer-Encoding: 8bit
X-Priority: 3 (Normal)
Importance: Normal

Not sure if these help, I need to take a closer look at SM configuration, and
maybe start from $useSendmail (now set to true, in /etc/squirrelmail/config.php).

-Paavo

Berhanie · 04-01-2011, 02:16 AM

ah, ok, so it looks like squirrelmail is invoking sendmail's sendmail binary instead of postfix's sendmail binary.
my squirrelmail config is this:

Code:

$useSendmail            = true;
$sendmail_path          = '/usr/sbin/sendmail';
$sendmail_args          = '-i -t';

note the line in bold. i don't have any sendmail packages on my system, but the line refers to
postfix's "sendmail" program, which submits mail through the file system instead of through the
tcp/ip stack (via the smtp). since you have both postfix and sendmail installed, there's a confusion
when taking about "the sendmail" binary. you can set sendmail_path to the location of the
sendmail that came with postfix, e.g. "$sendmail_path = '/usr/sbin/sendmail.postfix'", but this is
not a general solution, because you'll have problems again when you use the "mailx" program, for
example.

to fix it once and for all, you can do one of two things:

1. uninstall all sendmail packages.
2. keep both sendmail and postfix packages around, but tell your system (using your distro's configuration
tools) that postfix is the mail server that you're using. the system will then do such things as associate
/usr/sbin/sendmail with postfix's version.

Paavo · 04-01-2011, 04:19 AM

Hi,

I configured SM to use smtp (had to disable smtp tls, since my SM is 1.4.x and does not support STARTTLS yet), and now the sender domain is OK, i.e. what is set in Optios -> Personal Information E-mail Address field.

I also need to check if I should completely remove sendmail. I'm more familiar with postfix, and therefore I have just used chkconfig to disable sendmail and enable postfix (after congifuring postfix properly).

So this was not a postfix problem, it works well with my original settings. Also dovecot is OK, the only change I did was configure squirrelmail to use smtp (direct conection to postfix) instead id sendmail (wrappers).

Thanks for everybody do contributed, this problem has been bothering me for some time, but it seems to be working now.

-Paavo

Paavo · 04-01-2011, 07:57 AM

Hi,

> I also need to check if I should completely remove sendmail

I have Fedora 14, and 'alternatives --config mta' and choose postfix instead of sendmail
did the trick, I don't see a need to remove sendmail packages.

-Paavo

Quote:

# alternatives --display mta
mta - status is manual.
link currently points to /usr/sbin/sendmail.postfix
/usr/sbin/sendmail.sendmail - priority 90
slave mta-pam: /etc/pam.d/smtp.sendmail
slave mta-mailq: /usr/bin/mailq.sendmail
slave mta-newaliases: /usr/bin/newaliases.sendmail
slave mta-rmail: /usr/bin/rmail.sendmail
slave mta-sendmail: /usr/lib/sendmail.sendmail
slave mta-mailqman: /usr/share/man/man1/mailq.sendmail.1.gz
slave mta-newaliasesman: /usr/share/man/man1/newaliases.sendmail.1.gz
slave mta-aliasesman: /usr/share/man/man5/aliases.sendmail.5.gz
slave mta-sendmailman: /usr/share/man/man8/sendmail.sendmail.8.gz
/usr/sbin/sendmail.postfix - priority 30
slave mta-pam: /etc/pam.d/smtp.postfix
slave mta-mailq: /usr/bin/mailq.postfix
slave mta-newaliases: /usr/bin/newaliases.postfix
slave mta-rmail: /usr/bin/rmail.postfix
slave mta-sendmail: /usr/lib/sendmail.postfix
slave mta-mailqman: /usr/share/man/man1/mailq.postfix.1.gz
slave mta-newaliasesman: /usr/share/man/man1/newaliases.postfix.1.gz
slave mta-aliasesman: /usr/share/man/man5/aliases.postfix.5.gz
slave mta-sendmailman: /usr/share/man/man1/sendmail.postfix.1.gz
Current `best' version is /usr/sbin/sendmail.sendmail.
# exit