mysql - Postfix synchronize from primary to backup MX, domain, recipients and alias -


i've setup on debian jessie 2 postfix server (primary , backup mx) following workaround tutorial small changes.

now i'm looking best way sync "relay domains" , "relay recipients" (mysql based) primary backup mx postfix email server.

the way i've seen better (suggest me if wrong) is:

1) replicate postfix mysql database backup mx via mysql replication. however, operation must leave database of primary server intact, i.e. replication action must directed towards backup server , not vice versa!

2) tell postfix use relay domains , recipients , alias replicated database, eg like:

relay_domains = mysql:/etc/postfix/mysql_relay_domains.cf relay_recipient_maps = mysql:/etc/postfix/mysql_relay_recipients.cf transport_maps = mysql:/etc/postfix/mysql_transport.cf

/etc/postfix/mysql_relay_domains.cf :

hosts = 127.0.0.1 dbname = mailserver user = mailuser password = password query = select name virtual_domains name='%s'

/etc/postfix/mysql_relay_recipients.cf :

hosts = 127.0.0.1 dbname = mailserver user = mailuser password = password query = select email virtual_users email = '%s'

/etc/postfix/mysql_transport.cf :

hosts = 127.0.0.1 dbname = mailserver user = mailuser password = password query = select source virtual_aliases source = '%s'

in essence know if way considered sufficiently safe because not want through mysql replication risk of compromising primary postfix database. , if necessary add mysql_relay_domains.cf, mysql_relay_recipients.cf, mysql_transport.cf postfix configuration or if basic workaround setting enough.

thanks!


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