Zimbra's postfix main.cf file not saving changes after reboot!

[Memnock]

Greetings, I'm running Zimbra on Ubuntu and I what I wanted to do is use BitDefender's antivirus to scan mail instead of clam or whatever it has by default. I edited the Postfix main.cf and master.cf files and marked out the zimbra antivirus and added the lines for the BitDefender antivirus, according to the instructions by BitDefender and reloaded postfix and it worked flawlessly.

However, as soon as I reboot, all of the changes made to the main.cf file concerning the BitDefender antivirus in /opt/zimbra/postfix-2.2.9/conf/ folder are gone and it's back to not working again.

Here is what the main.cf file looks like after I have configured it to use BitDefender before I reboot:

#
#content_filter = smtp-amavis:[127.0.0.1]:10024
#

myhostname = localhost.localdomain
recipient_delimiter =
smtpd_sasl_auth_enable = yes
smtpd_tls_auth_only = yes
smtpd_use_tls = yes
disable_dns_lookups = no
message_size_limit = 10240000
mailbox_size_limit = 0
relayhost =
smtpd_recipient_restrictions = reject_non_fqdn_recipient, permit_sasl_authenticated, permit_mynetworks, reject_unlisted_recipient, reject_invalid_hostname, reject_non_fqdn_sender, reject_unauth_destination, permit
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /opt/zimbra/postfix-2.2.9/sbin
daemon_directory = /opt/zimbra/postfix-2.2.9/libexec
header_checks = pcre:/opt/zimbra/conf/postfix_header_checks
mailq_path = /opt/zimbra/postfix-2.2.9/sbin/mailq
manpage_directory = /opt/zimbra/postfix-2.2.9/man
newaliases_path = /opt/zimbra/postfix-2.2.9/sbin/newaliases
queue_directory = /opt/zimbra/postfix-2.2.9/spool
sender_canonical_maps = ldap:/opt/zimbra/conf/ldap-scm.cf
sendmail_path = /opt/zimbra/postfix-2.2.9/sbin/sendmail
smtpd_client_restrictions = reject_unauth_pipelining
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_helo_required = yes
smtpd_reject_unlisted_recipient = no
smtpd_tls_cert_file = /opt/zimbra/conf/smtpd.crt
smtpd_tls_key_file = /opt/zimbra/conf/smtpd.key
smtpd_tls_loglevel = 1
transport_maps = ldap:/opt/zimbra/conf/ldap-transport.cf
version = 2.2.9
virtual_alias_domains = ldap://opt/zimbra/conf/ldap-vad.cf
virtual_alias_maps = ldap:/opt/zimbra/conf/ldap-vam.cf
virtual_mailbox_domains = ldap:/opt/zimbra/conf/ldap-vmd.cf
virtual_mailbox_maps = ldap:/opt/zimbra/conf/ldap-vmm.cf
virtual_transport = error
#Added by BitDefender, do not remove!
content_filter = smtp:127.0.0.1:10025
#End of added lines

Here is what it looks like after I reboot:

#
#content_filter = smtp-amavis:[127.0.0.1]:10024
#

myhostname = localhost.localdomain
recipient_delimiter =
smtpd_sasl_auth_enable = yes
smtpd_tls_auth_only = yes
smtpd_use_tls = yes
disable_dns_lookups = no
message_size_limit = 10240000
mailbox_size_limit = 0
relayhost =
smtpd_recipient_restrictions = reject_non_fqdn_recipient, permit_sasl_authenticated, permit_mynetworks, reject_unlisted_recipient, reject_invalid_hostname, reject_non_fqdn_sender, reject_unauth_destination, permit
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /opt/zimbra/postfix-2.2.9/sbin
daemon_directory = /opt/zimbra/postfix-2.2.9/libexec
header_checks = pcre:/opt/zimbra/conf/postfix_header_checks
mailq_path = /opt/zimbra/postfix-2.2.9/sbin/mailq
manpage_directory = /opt/zimbra/postfix-2.2.9/man
newaliases_path = /opt/zimbra/postfix-2.2.9/sbin/newaliases
queue_directory = /opt/zimbra/postfix-2.2.9/spool
sender_canonical_maps = ldap:/opt/zimbra/conf/ldap-scm.cf
sendmail_path = /opt/zimbra/postfix-2.2.9/sbin/sendmail
smtpd_client_restrictions = reject_unauth_pipelining
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_helo_required = yes
smtpd_reject_unlisted_recipient = no
smtpd_tls_cert_file = /opt/zimbra/conf/smtpd.crt
smtpd_tls_key_file = /opt/zimbra/conf/smtpd.key
smtpd_tls_loglevel = 1
transport_maps = ldap:/opt/zimbra/conf/ldap-transport.cf
version = 2.2.9
virtual_alias_domains = ldap://opt/zimbra/conf/ldap-vad.cf
virtual_alias_maps = ldap:/opt/zimbra/conf/ldap-vam.cf
virtual_mailbox_domains = ldap:/opt/zimbra/conf/ldap-vmd.cf
virtual_mailbox_maps = ldap:/opt/zimbra/conf/ldap-vmm.cf
virtual_transport = error
#Added by BitDefender, do not remove!
content_filter =
#End of added lines

Why is it deleting the BitDefender information after reboot, and how can I make it stop?

[dkarp]

Zimbra regenerates main.cf. If you want to persistently change the postfix config, I believe you need to edit /opt/zimbra/conf/zmmta.cf instead and add/change a POSTCONF line.

[Memnock]

Zimbra regenerates main.cf. If you want to persistently change the postfix config, I believe you need to edit /opt/zimbra/conf/zmmta.cf instead and add/change a POSTCONF line.

Thanks for the quick response.

So what you're saying is that in the zmmta.cf the lines that contain the following:

smtp-amavis:[127.0.0.1]:10024

I should change to:

smtp:127.0.0.1:10025

to match the correct BitDefender configuration?

[anand]

sounds rights, but we may not blow away zmmta.cf on upgrades, so watch out for that.

[Memnock]

sounds rights, but we may not blow away zmmta.cf on upgrades, so watch out for that.

Thanks, that worked for me. Much appreciated.