On Sun, 2012-01-01 at 21:03 -0500, James Smallacombe wrote: > The IP address of our mail server was recently blacklisted by MSN/Hotmail. > When I went through their steps for delisting, it was denied based on > "reputation". AFAIK, we have not had a spam problem for several months. > When we did it was due to a few accounts having been successfully phished. > Since then our customers have been far more savvy and I have not seen the > problem. I manually delisted us from all the known BLs back then and all has > been ok. > > A current multi DNSBL lookup only shows 3 out of a couple hundred BLs listing > us. You may be familiar with the ones that did (blackholes.five-ten-sg.com > for example). No major, reputable, widely used DNSBL lists the IP. > > I have been doing this for 16 years. It has always been SOP to provide an > offending email, with full headers to the complaint recipient, if not in > advance of such blacklisting, then at least upon request. They sure require > it of me when I report abuse of their servers. They flat out refuse to do > this, claiming they have no access to this. I had this same issue with > Cloudmark's BL a couple of months ago (which Comcast and other major > providers use), so I suspect this is some kind of outsourced blacklist that > does a poor job of updating their listings or one of my regular customers is > sending out emails that are being incorrectly reported as spam. I have seen > the latter happen several times with other servers I've worked with that auto > generate legitimate emails of reports that customers pay for, but aggressive > filters such as AOL's auto-report as spam (to be fair, AOL is excellent at > resolving these). > > We do have SPF records for our main domains, but no DKIM or other > whitelisting/authentication mechanisms. Is this sort of thing going to be > widely required?
Yes. Also make sure your reverse dns doesn't look like XXX.XXX.XXX.XXX.mydomain.com. (where XXX is the reverse IP, that gives you a bad score.) This are the steps I went thought for Hotmail: Publish SPF and DKIM records Open a hotmail account login https://support.msn.com/ Register with the following "Programs" SenderID - Register you SPF records Sender Information for Hotmail Delivery - Tell them you want to send them emails Junk Mail Reporting Partner Program - Register an address that complaints about your emails will go to. #Register your IP address at https://postmaster.live.com/snds/index.aspx Then view data about your IP address at https://postmaster.live.com/snds/data.aspx -- Jean-Francois Pirus | Technical Manager franc...@clearfield.com | Mob +64 21 640 779 | DDI +64 9 282 3401 Clearfield Software Ltd | Ph +64 9 358 2081 | www.clearfield.com
