Let me start by saing that this is acutomer to customer forum. The majority of people here are just customers like your self. If you want to put your message infront of DH staff you should probably put in a 'sigguestion' through the support section of the panel.
The problem with sending E-mails on to AOL is all on AOL. When you forward on E-mails from an account at dreamhost to AOL, and then use AOL's spam filter they don't look at where the E-mail is really coming from - they just see the last server it came from, in this case DH. So you get E-mails from servers all around the world to your DH account, DH forwards them on to AOL and AOL blams DH for sending spam.
AOL also blocks E-mail based solely on the volume of mail coming in. If there's a lot of E-mail coming from one IP, it must be spam! That's of course not true, and part of this issue may fall on DH. Becuase the majority of E-mail from POP/IMAP clients goes out fromteh same IP address. And becuase DH is a large host, that's a lot of non-spam E-mails.
If you're an AOL customer, I'd sigguest that you contact AOL and let them know that you're haivng issues with their spam practices.
I don't know as much about the comcast issue, but from the reports it seem DH can't get ahold of anybody over at comcast to even find out what the issue is.
As far as a new host goes, you may or my not run into the same problems. If it's a smaller host, you may be better off -but when they are blocked they may be less able to deal with the problem. At least with Dreamhost you know they're taking steps to make it better.
art.googlies.net - personal website