I have seen the posts about getting a failure when sending email to AOL. Here is what I know. My domain http://www.cazman.com has correct DNS entries and is registered, further my mail server is locked down and I do not Spam. I think this is part of the new combo effort from AOL, Yahoo and MSN to block spammers. Does anyone have any ideas about the guidelines being used or how to fix this “blocking” ?
Dan
04/23/2003 06:43:33 PM Router: No messages transferred to AOL.COM (host mailin-01.mx.AOL.COM) via SMTP: SMTP Protocol R
eturned a Permanent Error
04/23/2003 06:43:33 PM Router: No messages transferred to AOL.COM (host mailin-02.mx.AOL.COM) via SMTP: SMTP Protocol R
eturned a Permanent Error
04/23/2003 06:43:33 PM Router: No messages transferred to AOL.COM (host mailin-04.mx.AOL.COM) via SMTP: SMTP Protocol R
eturned a Permanent Error
04/23/2003 06:43:33 PM Router: No messages transferred to AOL.COM (host mailin-03.mx.AOL.COM) via SMTP: SMTP Protocol R
eturned a Permanent Error
04/23/2003 06:43:36 PM Router: Failed to connect to SMTP host AOL.COM because SMTP Protocol Returned a Permanent Error
We had the same issue with sending to AOL.com. The problem is with reverse lookups. Our Domino box is allowed to send SMTP directly to the internet, but our MX is on a DMZ, which also runs external DNS. When the Domino Server sends to aol.com, the MX server is the one who talks SMTP to aol.com. MX has it’s own IP address, so when aol.com allows the IP (our MX) to send the mail, it comes from another IP (domino server). AOL sees that as it OKs one IP to exchange, but the mail is coming from another IP. What we did, we relayed outgoing mail to our DMZ box so the IP that AOL allows is getting the mail.
I have been having the same problem lately. It started all of a sudden. There have been no changes made on my end whatsoever and AOL is the only place I have found I cannot send to.
Does anyone have any information on this AOL blockage and if it is caused by their new effort to reduce spam?
The giants have recently begun implementing new policies under which they will only accept inbound SMTP connections coming from IP addresses which they consider to be “legitimate”, and now block all inbound SMTP connections from all hosts they think are coming from “residential broadband” such as cablemodem and DSL ISP address ranges. If your ISP is giving you an IP address in one of these “illegitimate” ranges, then you’re basically screwed.