Strange mail problem

[blocker]

Hi Forumers,

i have a strange problem on 1 of my servers running ispconfig 2.2.23 and debian etch

So here it is:

1. mail is sent to ebay@example1.com, example1.com does not have a mailbox named ebay, and does not have any "catch all" turned on
2. example2.com does have a mailbox named ebay - ebay@example2.com

the mail fails to deliver to ebay@example1.com BUT it gets in the mailbox ebay@example2.com

Does anybody have an idea whats going on?

Thanks!

[falko]

This might be the problem: http://www.howtoforge.com/faq/9_33_en.html

[blocker]

Unfortunately it is not...

server FQDN is something like this: server123.server-provider.com. The domain server-provider.com is not hosted on server123. In the the main.cf there is nothing mentioned about the problematic domains: example1.com and example2.com :eek:

[falko]

What's in your main.cf?

[blocker]

My main.cf looks so with the comments removed:

smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no
smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt
smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key
smtpd_use_tls = yes
smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache
myhostname = server123.server-provider.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
relayhost =
mynetworks = 127.0.0.0/8
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
smtpd_sasl_local_domain =
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject _unauth_destination
smtpd_tls_auth_only = no
smtp_use_tls = yes
smtp_tls_note_starttls_offer = yes
smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom
virtual_maps = hash:/etc/postfix/virtusertable
mydestination = /etc/postfix/local-host-names
unknown_local_recipient_reject_code = 450

[falko]

What's in /etc/mailname?

[blocker]

What's in /etc/mailname?

server123.server-provider.com

[falko]

Did you remove the user prefixes in ISPConfig, and is there a user called ebay in /etc/passwd?

[blocker]

Did you remove the user prefixes in ISPConfig, and is there a user called ebay in /etc/passwd?

YES!!!
both are true...

[falko]

Ok, that's the problem. example1.com and example2.com both point to the same server, and then Postfix sees that there's a user called "ebay" and delivers the mail to his mailbox. The solution is to not disable the user prefixes in ISPConfig...