Unknown in header problem -SOLVED-

Light Speed · *nix forums beginner Joined: 05 Jan 2000 Posts: 2

EDIT-
This turned out to a hosts issue. Not Postfix.

I added:
xx.xx.xx.xx mail.example.com to my hosts file and all is happy Smile

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Postfix 2.3.3
CentOS 5.1

I have a virtual host on my VPS that has it's own dedicated IP and I am in the process of installing PHPList and while testing I am noticing something strange in my Received from header.

example.com is the virtual host
xx.xx.xx.xx is example.com's IP

vps.example.net is my vps
yy.yy.yy.yy is the vps IP

Received: from www.example.com (unknown [xx.xx.xx.xx]) by vps.example.net (Postfix) with ESMTP id 3CFFC5A086A8 for <somebody@gmail.com>; Thu, 3 Jul 2008 02:55:53 -0700 (PDT)

Notice the unknown?

Is this a postfix issue?
It doesn't show that way when I send email from mail accounts of that virtual host. Only when sending with PHPList using PHPMailer to allow smtp.

When I send regular mail either from a client or from webmail from accounts for that domain it looks like this:

From webmail:
Received: from vps.example.net (vps.example.net [yy.yy.yy.yy]) by mx.google.com with ESMTP id g31si13893454rvb.2.2008.07.03.03.03.58; Thu, 03 Jul 2008 03:03:58 -0700 (PDT)

From mail client:
Received: from vps.example.net (vps.example.net [yy.yy.yy.yy]) by mx.google.com with ESMTP id g22si12871147rvb.7.2008.07.03.02.59.08; Thu, 03 Jul 2008 02:59:09 -0700 (PDT)
Received: from [192.168.1.2] (My Info Removed [my.ip.my.ip]) by vps.example.net (Postfix) with ESMTP id 41EC65A086A8 for <somebody@gmail.com>; Thu, 3 Jul 2008 02:59:01 -0700 (PDT)

So when PHPList is sending using smtp it is of course using the vps mail server as I only have one instance of postfix but it seems postfix does not know the proper info to write for the virtual host on xx.xx.xx.xx so it writes unknown rather than www.example.com.

If this is a postfix issue how can I fix it?

If it is not a postfix issue can anybody point me in the right direction?

Here is my postconf:

postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
home_mailbox = Maildir/
html_directory = no
mailbox_command = /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, localhost, vps.example.net
newaliases_path = /usr/bin/newaliases.postfix
qmgr_message_active_limit = 4000
readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
sample_directory = /usr/share/doc/postfix-2.3.3/samples
sender_bcc_maps = hash:/etc/postfix/bcc
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination
smtpd_sasl_auth_enable = yes
unknown_local_recipient_reject_code = 550
virtual_alias_maps = hash:/etc/postfix/virtual

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