Yesterday email redirects from one of my Dreamhost hosted domain began bouncing from Google. Not just filtered into spam, mass email blacklist bounces.
Investigating this I found several issues with Dreamhost email hosting including broken certificate support, missing SPF headers, and lack of SSL support. (I implemented DKIM myself so I can’t yet say if that is broken too. DH documentation claims automatic DKIM and SPF support.)
Overall it seems about 6 years out of date.
I’ll open DH support tickets for all of these and report back in a longer post. If you know more about Dreamhost email configuration issues please email me at email@example.com.