Linode Forum :: X-Postfix loops back can't receive email: Dovecot + Maildir

This is the mail system at host li111-11.members.linode.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The mail system

<user@li111-11> (expanded from <user@domain.com>): mail for li111-11
loops back to myself

Reporting-MTA: dns; li111-11.members.linode.com
X-Postfix-Queue-ID: 4D64E1A74A
X-Postfix-Sender: rfc822; myemail@gmail.com
Arrival-Date: Thu, 16 Jul 2009 19:04:11 -0400 (EDT)

Final-Recipient: rfc822; user@li111-11
Original-Recipient: rfc822;user@domain.com
Action: failed
Status: 5.4.6
Diagnostic-Code: X-Postfix; mail for li111-11 loops back to myself

Author:	MichaelE [ Fri Jul 17, 2009 2:41 pm ]
Post subject:	X-Postfix loops back can't receive email: Dovecot + Maildir
I seem to be having an issue receiving emails. For example, I sent an email from a gmail account to my user@domain.com account and I received this email titled "Undelivered Mail Returned to Sender" at my gmail: Quote: This is the mail system at host li111-11.members.linode.com. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system <user@li111-11> (expanded from <user@domain.com>): mail for li111-11 loops back to myself Reporting-MTA: dns; li111-11.members.linode.com X-Postfix-Queue-ID: 4D64E1A74A X-Postfix-Sender: rfc822; myemail@gmail.com Arrival-Date: Thu, 16 Jul 2009 19:04:11 -0400 (EDT) Final-Recipient: rfc822; user@li111-11 Original-Recipient: rfc822;user@domain.com Action: failed Status: 5.4.6 Diagnostic-Code: X-Postfix; mail for li111-11 loops back to myself My mydestination in postfix looks like this: Code: mydestination = li111-11.members.linode.com, localhost.members.linode.com, localhost The last setting I made was in my Virtualmin going to System Settings > Module Config > Defaults for new domains labeled "Include domain name in usernames?", which I selected "Only to avoid a clash". Not sure in what file in my system that change was made by Virtualmin. I did that so that the email addresses of users would be user@domain.com instead of user.domain@domain.com. The setting worked. However, this issue has come up. Any ideas? Let me know if you'd like to see any error logs, etc. Mozilla Thunderbird v2.0.0.22 Dovecot v1.1.11 Postfix v2.5.5 Procmail + SpamAssassin Webmin + Virtualmin Ubuntu 9.04

Author:	dominian [ Fri Jul 17, 2009 2:47 pm ]
Post subject:
Mail loops back to myself' means that your Postfix wanted to send out the mail to the internet but then discovered that the DNS says your mail server should be responsible. Most likely you forgot to list your domain in mydestination or virtual_(alias\|mailbox)_domains

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