email – Domain & IP pair reputation

I haven’t seen a provider post their algorithm for deciding the reputation of a domain other than what you find in common spam filters.

Based on my own anecdata I’ve never managed a mail server that got a bad reputation after I set up outbound spam filtering, and applied appropriate SPF and DKIM records and an aggressive DMARC policy to go with them. That includes everything from 2000+ mailbox production systems, dev and test environments for in-house developed software, down to the email server for my private domain.

In short: If you make sure it’s hard to abuse your mail servers and domain names, your domain reputation is unlikely to become bad.