On 9/3/2017 6:28 AM, Davide Marchi wrote: > Il 2017-09-01 22:57 Noel Jones ha scritto: > [..] >> >> On the backup MX: >> >> >> DO NOT list the domain in mydestination, virtual_alias_domains, or >> mailbox_domains parameters. These list domains for local delivery. > > > You mean: do not list the domain of the *primary server* in > mydestination, virtual_alias_domains, or mailbox_domains parameters, > confirm?
Yes, I'm referring to the primary domain; the domain this box is a secondary MX for. > >> >> DO list the domain in relay_domains > > Here I've the virtual domain list on mysql table (replicated/synced > with the primary server), could I use a mysql query here? Yes, you can use any supported map type. > This query > should exclude the primary sever domain from the list? And the query > output could be the list of all domain one for each row? Your question is unclear. If the domain your secondary for is "example.com", then example.com should be a key in the table with any result. Do not return a list of domains. If this is for only one or a few domains, probably easier to just list them in master.cf rather than using a table. http://www.postfix.org/postconf.5.html#relay_domains >> >> DO NOT list the valid recipients in virtual_mailbox_maps, or >> virtual_alias_maps. These list local recipients. > > here could I simply comment the above parameters > (virtual_mailbox_maps, and virtual_alias_maps)? Yes, if you don't need them for local purposes. > >> DO list valid recipients in relay_recipient_maps > > Here, as above, could I use a MySQL query for list the all valid > recipients (included the alias), one for each row? The list contains > addresses for the primary server domain. Do I also have to remove > references to the primary server domain here? Yes, you can use mysql for this map. Each valid recipient is a separate row. Every address listed here will be accepted to relay to the primary server; unlisted addresses will be rejected as unknown. http://www.postfix.org/ADDRESS_CLASS_README.html#relay_domain_class -- Noel Jones
