modern days aliases

Asuming we have on a mail server(that hosts some external aliases, like has an alias for, which is hosted on a different server, probably on a different mail provider. Typically when a mail is sent to, it’s sender’s mail server sends the mail to the MX which hosts the mail […]

TIP: Make Postfix use less SQL connections

When you manage Postfix mail servers using SQL connections to find informations about usernames, mailbox/maildir locations on the disk you probably have in your something like : virtual_alias_maps = mysql:/etc/postfix/ virtual_mailbox_domains = mysql:/etc/postfix/ virtual_mailbox_maps = mysql:/etc/postfix/ relay_domains = mysql:/etc/postfix/ But, this way, each process(postfix process) uses one MySQL connection. Each mail that relays thru […]