Strange, yesterday everything seemed fine. Today I get 2 problems:
Mail to any domain bounces with "User unknown in virtual alias table"
postconf -n [code:1]alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases broken_sasl_auth_clients = yes command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix debug_peer_level = 2 home_mailbox = Maildir/ html_directory = no inet_interfaces = all mail_owner = postfix mailbox_command = /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost, vpshost.com newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES sample_directory = /usr/share/doc/postfix-2.3.3/samples sender_bcc_maps = hash:/etc/postfix/bcc sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated rejec t_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous unknown_local_recipient_reject_code = 550 virtual_alias_maps = hash:/etc/postfix/virtual[/code:1]
Next strange issue:
Sending from webmail works. But mail arrives with sender: user.domain@vpshost.com instead of user@domain.com
there seem to be some issues too with users and groups. Maybe something happened while I changed one group from domain.com to domain, as 2 other domains are that way and worked fine - well, before.
Problem solved.
I noticed that new mailboxes show the correct user@domain.com format when sending. To any newly created mailbox I could also send to with no bounce.
I just deleted and re-created all mailboxes with errors.