[MM3-users] Re: Using external services for deliverability?

And speaking of reverse DNS, I do have a valid PTR record that maps to the domain of my server. But that domain will never match the sending domain for outgoing mailman mail for two reasons:

1. Mailman keeps the from header intact, so the sending domain can be anything.
2. Even the list domain can be any number of domains since I host more than one domain on the server.

So I hope there is not an expectation that the rDNS domain match the email sender domain. If so I'm toast. Is it just sort of a smell test to see if the server looks legitimate?

Thanks again!