Voraussetzung: postfix-dovecot-imapd mit LMTP und dovecot-virtual-domains

/etc/postfix/virtual_mailbox_domains.txt

# postmap hash:/etc/postfix/virtual_mailbox_domains.txt
example.com yes

postmap hash:/etc/postfix/virtual_mailbox_domains.txt

Domain nachschlagen testen:

postmap -q example.com hash:/etc/postfix/virtual_mailbox_domains.txt

/etc/postfix/virtual_alias_maps.txt

# postmap hash:/etc/postfix/virtual_alias_maps.txt
postmaster@example.com  user1@example.com
abuse@example.com       user1@example.com
user1@example.com       user1@example.com
user2@example.com       user2@example.com
admin@example.com       user1@example.com,user2@example.com

postmap hash:/etc/postfix/virtual_alias_maps.txt

Empfänger nachschlagen testen:

postmap -q postmaster@example.com hash:/etc/postfix/virtual_alias_maps.txt
postmap -q user2@example.com hash:/etc/postfix/virtual_alias_maps.txt

/etc/postfix/main.cf

virtual_mailbox_domains = hash:/etc/postfix/virtual_mailbox_domains.txt
virtual_mailbox_maps    = hash:/etc/postfix/virtual_alias_maps.txt
virtual_alias_maps      = hash:/etc/postfix/virtual_alias_maps.txt
 
virtual_transport = lmtp:unix:private/dovecot-lmtp

• http://www.postfix.org/VIRTUAL_README.html#virtual_mailbox