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Server

Confused Email server

Wordsmith

4/20/24, 10:02 AM

I have recently migrated my server from Centos 6.9 to a new server with Centos 7.9 and I faced numerous issues owing to drastic change in OS, Version Changes in Perl, Python, PHP and Apache. I have sorted them out.

Except that the Postfix/Dovecot servers continue to cause deep anguish. For example: [email protected], [email protected] and [email protected] - all land up in the admin account of the server which is not mapped to any domain in the first place.

This is what I have done in the /ect/postfix/virtual:

[email protected] domain1.com-admin
[email protected] domain2.com-admin

Result: No joy

Then I added into /etc/postfix/vmailbox:

[email protected] domain1.com/admin
[email protected] domain2.com/admin

After doing the routine postmap /etc/postfix/virtual and postmap /etc/postfix/vmailbox, still no separation of the admin mails.

Where should I look ? I would be grateful for any pointers.

Postfix configuration information:

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
data_directory = /var/lib/postfix
debug_peer_level = 2
debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5
disable_vrfy_command = yes
header_checks = regexp:/etc/postfix/header_checks
home_mailbox = Maildir/
html_directory = no
inet_protocols = all
mailbox_command = /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME
mailbox_size_limit = 0
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
milter_default_action = accept
mydestination = $myhostname, $mydomain, localhost.$mydomain, localhost, mail.$mydomain
newaliases_path = /usr/bin/newaliases.postfix
non_smtpd_milters = inet:localhost:8891
readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES
resolve_dequoted_address = no
sample_directory = /usr/share/doc/postfix-2.10.1/samples
sender_bcc_maps = hash:/etc/postfix/bcc
sender_dependent_default_transport_maps = hash:/etc/postfix/dependent
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtp_tls_security_level = may
smtpd_error_sleep_time = 5s
smtpd_milters = inet:localhost:8891
smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
smtpd_tls_CAfile = /etc/postfix/postfix.ca.pem
smtpd_tls_cert_file = /etc/postfix/postfix.cert.pem
smtpd_tls_key_file = /etc/postfix/postfix.key.pem
smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
smtpd_tls_security_level = may
unknown_local_recipient_reject_code = 550
virtual_alias_maps = hash:/etc/postfix/virtual
virtual_mailbox_maps = hash:/etc/postfix/vmailbox

Snippet from /etc/postfix/virtual:

domain1.com domain1.com
[email protected] domain1.com-admin
domain2.com domain2.com
[email protected] domain2.com-admin

Snippet from /etc/postfix/vmailbox:

[email protected] domain1.com/admin
[email protected] domain2.com/admin

0 + 9

postfix

Gerald Schneider

4/20/24, 10:21 AM

Please provide your postfix configuration.

Wordsmith

4/20/24, 4:24 PM

Thanks Schneider.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 data_directory = /var/lib/postfix debug_peer_level = 2 debugger_command = $process_id & sleep 5 disable_vrfy_command = yes header_checks = regexp:/etc/postfix/header_checks home_mailbox = Maildir/ html_directory = no inet_protocols = all mailbox_command = /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME

Wordsmith

4/20/24, 4:33 PM

mailbox_size_limit = 0 mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man milter_default_action = accept mydestination = $myhostname, $mydomain, localhost.$mydomain, localhost, mail.$mydomain newaliases_path = /usr/bin/newaliases.postfix sender_dependent_default_transport_maps = hash:/etc/postfix/dependent smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination smtpd_relay_restrictions = permit_mynetworks

Wordsmith

4/20/24, 4:33 PM

permit_sasl_authenticated defer_unauth_destination smtpd_tls_CAfile = /etc/postfix/postfix.ca.pem smtpd_tls_cert_file = /etc/postfix/postfix.cert.pem smtpd_tls_key_file = /etc/postfix/postfix.key.pem smtpd_tls_security_level = may unknown_local_recipient_reject_code = 550 virtual_alias_maps = hash:/etc/postfix/virtual

Gerald Schneider

4/20/24, 5:27 PM

Please edit this information into your question. It's unreadable in the comments.

anx

4/20/24, 9:44 PM

Upgrading Postfix should in most cases continue to work with the old configuration. Unless you show us your pre-upgrade backup and the changes you made, it will be almost impossible to guess which change caused undesirable side-effects.

Nikita Kipriyanov

4/21/24, 8:17 AM

What are `myhostname`, `mydomain`, `myorigin`? Do you realize what happens when you specify destination without "@domain" in the alias maps database? (It [appends @$myorigin](https://www.postfix.org/virtual.5.html) [by default](https://www.postfix.org/postconf.5.html#append_at_myorigin).) When you provide a Postfix configuration, you should follow a suggestion given in the tag description; it will make sure you include all the needed information.

Wordsmith

4/21/24, 9:18 AM

Thank you Nikita. The problem is when I migrated, obviously the Webmin/Virtualmin has munged some critical data. I have checked your link and all it says is the content of the virtual table should have the [email protected] address . But it does not specify how the address should look like. myhostname points to the main server name and mydomain refers to the virtual domains. What do I miss ?

Wordsmith

4/25/24, 7:30 AM

I have managed to restore normalcy by editing the /etc/postfix/virtual: The order is list your virtual domain [tab] virtual domain, user@domain[tab] user\@domain. Follow the drill to update the virtual table and reload.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Confused Email server

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