Hello,

I'm trying to use virtual domains and regular expressions, but I am
getting the infamous "mail for mailserver.my.domain.com loops back to
myself" error in the logs and bounced emails. I've searched the
archives and FAQ, but can't find a solution.

mail.log:

Feb 4 13:27:02 mailserver postfix/smtp[21467]: F28F525D41E:
to=<sdfmy1.domain.com>, relay=none, delay=1, status=bounced (mail for
mailserver.domain.com loops back to myself)

Here is my virtual.regexp file:

/testingmy1\.domain\.com$/ root
/testingmy1\.domain\.com$/ root

Here is the output of postconf -n:

alias_maps = netinfo:/aliases
command_directory = /usr/local/bin
daemon_directory = /usr/local/bin
debug_peer_level = 2
mail_owner = postfix
mail_spool_directory = /var/mail
mailbox_command = /usr/bin/procmail
mydestination = $myhostname, localhost.$mydomain $mydomain
my1.domain.com my2.domain.com
mydomain = corp.apple.com
myhostname = dialog.corp.apple.com
mynetworks = 17.0.0.0/8, 127.0.0.0/8
queue_directory = /var/spool/postfix
relayhost = relay.apple.com
transport_maps = hash:/etc/postfix/transport
virtual_maps = regexp:/etc/postfix/virtual.regexp

And just for good measure here is the transport file. I have it setup
for the backup mail server according to the FAQ.

more transport
my1.domain.com smtp:mailserver.my.domain.com
my2.domain.com smtp:mailserver.my.domain.com

Can someone help me locate the error of my ways?

Thanks,

Adhamh

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