issue with Sending mail

Virtualmin
1

Hi, anytime somone sends us an email, it gets kicked back with the following error:

mail for gordon loops back to myself

here is whats in the details.txt file

Reporting-MTA: dns; gordon.atiptopcomputer.com
X-Postfix-Queue-ID: 6B0691222AA
X-Postfix-Sender: rfc822; **************@gmail.com
Arrival-Date: Mon, 29 Mar 2010 01:29:25 -0600 (MDT)

Final-Recipient: rfc822; ***********
Original-Recipient: rfc822****************
Action: failed
Status: 5.4.6
Diagnostic-Code: X-Postfix; mail for gordon loops back to myself

How can I resolve this?

Many thanks

2

Howdy,

Something like that can happen if Postfix gets confused as to whether it’s actually the final destination for your email.

You may want to make sure of a few things:

  • Set your hostname to an actual “FQDN” – something like “gordon.atiptopcomputer.com” rather than just “gordon”. You can check/set that with the “hostname” command on the command line.

  • Whatever your hostname is set to, make sure that appears next to your IP address in /etc/hosts

  • Also make sure that your hostname is listed in the mydestination line of /etc/postfix/main.cf.

-Eric

3

I tried those and am still getting the issue, any other ideas?

4

Hrm, something about that error message is fishy.

Just for fun, could you paste in the output for the following:

  • Output of the command: hostname

  • Contents of /etc/hosts

  • Output of “postconf -n”

Thanks!

-Eric

5

output of hostname is: gordon.atiptopcomputer.com

/etc/hosts is

127.0.0.1 localhost
10.32.64.13 gordon gordon

The following lines are desirable for IPv6 capable hosts

::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

postconf -n output:

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
home_mailbox = Maildir/
inet_interfaces = all
mailbox_command = /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME
mailbox_size_limit = 0
mydestination = gordon.atiptopcomputer.com, localhost.atiptopcomputer.com, , localhost
myhostname = gordon.atiptopcomputer.com
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
myorigin = /etc/mailname
readme_directory = no
recipient_delimiter = +
relayhost =
sender_bcc_maps = hash:/etc/postfix/bcc
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
virtual_alias_maps = hash:/etc/postfix/virtual

6

Aha!

This /etc/hosts entry is your problem:

10.32.64.13 gordon gordon

Your hostname isn’t gordon, it’s “gordon.atiptopcomputer.com”. So Postfix is getting confused.

Try changing that line to read:

10.32.64.13 gordon.atiptopcomputer.com gordon

7

made that change and still doing the same thing