Hello, I’ve a Postfix 2.9.1 with sasl auth used by 4500 Customours for sending "every day mails"...
With those 4500 Customers when one of them use it for sending junk mail, our ip address is sometimes blacklisted. I would like to offer a new services for some of my customers to secure their sendings... What i need to do is to separate outgoing mail, I've thought configuring multiple relay host depending on SASL Authentication : So I could send outgoing email for bad user on Specific IP address, Reserve some IP Adress for paying clients claiming they will never send spam, and that want to be sure they wont be blacklisted (1 ip per client), and a last one for unknown status clients : For exemple: BadUser1@Domain would have a relay host -> Blacklisted.relayhost.domain.ltd BadUser2@Domain would have a relay host -> Blacklisted.relayhost.domain.ltd PayingUser1@Domain would have a relay host -> specific.relayhost1.domain.ltd PayingUser2@Domain would have a relay host -> specific.relayhost2.domain.ltd UnknownStatusUser@Domain would have a relay host -> normal.relayHost.domain.ltd Is there a way to build such a solution ? Kind regards Nico
