I am having a strange situation which I could not find elsewhere. When I send mail to rcook on my local machine, I'm seeing this in the syslog:
Feb 16 20:27:14 linode postfix/pickup[1305]: 326CC4463F: uid=0 from=<root>
Feb 16 20:27:14 linode postfix/cleanup[1524]: 326CC4463F: message-id=<[email protected]>
Feb 16 20:27:14 linode postfix/qmgr[1306]: 326CC4463F: from=<[email protected]>, size=302, nrcpt=1 (queue active)
Feb 16 20:27:14 linode postfix/lmtp[1531]: 326CC4463F: to=<[email protected]>, orig_to=<rcook>, relay=linode.example.net[private/dovecot-lmtp], delay=0.06, delays=0.04/0.01/0.01/0.01, dsn=5.1.1, status=bounced (host linode.example.net[private/dovecot-lmtp] said: 550 5.1.1 <[email protected]> User doesn't exist: [email protected] (in reply to RCPT TO command))
Feb 16 20:27:14 linode postfix/bounce[1533]: 326CC4463F: sender non-delivery notification: 3C71844643
Feb 16 20:27:14 linode postfix/qmgr[1306]: 326CC4463F: removed
It looks like "rcook" is being turned into "[email protected]" by postfix. I am using mysql lookups for postfix, per my main.cf file:
#Virtual domains, users, and aliases
virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf
virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf
I have to add a user, [email protected] to my /etc/postfix/mysql-virtual-mailbox-maps.cf file. Then rcook gets mail in /var/mail/rcook destined for rcook. In other words, sending mail to 'rcook' gets turned into '[email protected]' which then gets delivered back to 'rcook' I'm hoping someone here can clear up what's going on.
It looks as though rcook is a real mailbox:
root@linode (~ ): postmap -q rcook mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf
1
and
root@linode (~ ): ls /var/mail/rcook
[Airmail] dovecot-uidvalidity
* amazon and ebay sales dovecot-uidvalidity.54e27e23
Apple Mail To Do Drafts
etc etc etc lots of mailboxes...
[email protected] maps to rcook:
root@linode (~ ): postmap -q [email protected] mysql:/etc/postfix/mysql-virtual-alias-maps.cf
rcook
But this fails, unless I add a virtual_users entry for [email protected]:
date | mail -s 'testing' rcook
My question is, why is rcook getting mapped to [email protected]? I'm thinking it has something to do with the $mydomain value in the postfix world, but I don't know how that's getting set.
root@linode (~ ): postconf | grep mydomain
append_dot_mydomain = no
mydomain = example.net
Here is my postfix non-defaults:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
inet_interfaces = all
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
mydestination = localhost
myhostname = linode.example.net
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
myorigin = /etc/mailname
readme_directory = no
recipient_delimiter = +
relayhost =
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_path = private/auth
smtpd_sasl_type = dovecot
smtpd_tls_auth_only = yes
smtpd_tls_cert_file = /etc/dovecot/dovecot.pem
smtpd_tls_key_file = /etc/dovecot/private/dovecot.pem
smtpd_use_tls = yes
virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf
virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf
virtual_transport = lmtp:unix:private/dovecot-lmtp
There is nothing mentioning example.net anywhere in /etc/dovecot/. What's going on here? I should mention that if I do add a user [email protected] to my virtual_users, all is well. I just am mystified as to what's happening under the hood as it were, and why this user is needed, since it's just an alias.
Here is what happens in the log when I add '[email protected]' to my virtual_users mapping:
Feb 17 10:35:55 linode postfix/pickup[8804]: 3D785901CA: uid=0 from=<root>
Feb 17 10:35:55 linode postfix/cleanup[9231]: 3D785901CA: message-id=<[email protected]>
Feb 17 10:35:55 linode postfix/qmgr[1619]: 3D785901CA: from=<[email protected]>, size=326, nrcpt=1 (queue active)
Feb 17 10:35:55 linode dovecot: lmtp(9262, [email protected]): IX33DwuK41QuJAAAmhsNrQ: msgid=<[email protected]>: saved mail to INBOX
Feb 17 10:35:55 linode postfix/lmtp[9233]: 3D785901CA: to=<[email protected]>, orig_to=<rcook>, relay=linode.example.net[private/dovecot-lmtp], delay=0.03, delays=0.01/0/0.01/0.01, dsn=2.0.0, status=sent (250 2.0.0 <[email protected]> IX33DwuK41QuJAAAmhsNrQ Saved)
Feb 17 10:35:55 linode postfix/qmgr[1619]: 3D785901CA: removed
grep 326CC4463F /var/log/mail.log
virtual_alias_maps
?