Bellsouth/ AT&T mail problems



I would dare say there are more than a couple people “out there” right now that are puzzled as to WHY some of their mail is bouncing back to them as being rejected. Right now I’m talking about Bellsouth / AT&T mail users…. it appears that this week AT&T is in the process of transitioning it’s outbound mail relays to a new address block. 207.115.11.51 – 207.115.11.56 – the names of these machines are fmailhost01.isp.att.net – fmailhost06.isp.att.net …. Yesterday I noticed 4/5/6 had been moved – today 3 has been moved over and I noticed only because a test message that I RUN through a (formerly) bellsouth system bounced back and made it through…. The problem is the address space that AT&T is making use of used to be in the dial up block of their service and SEVERAL online blacklists have not been notified of the change. It is not possible for an end user to FIX this problem, AT&T technicians need to contact http://www.au.sorbs.net/ (SORBS) Among other locations to help their customers. The only thing techs in control of individual mailservers can do is whitelist the new AT&T addresses. (Well you could disable whitelisting altogether, but that would probably be a big HELLO SPAM).

It may be even murkier a situation – they may using BOTH sets of IP addresses (old and new) for the time being… here are two log entries that would seem to confirm that…

Jul 25 16:47:09 xxxxx postfix/smtpd[7812]: disconnect from fmailhost03.isp.att.net[207.115.11.53]
Jul 25 16:47:09 xxxxx postfix/smtpd[7812]: connect from fmailhost03.isp.att.net[204.127.217.103]

Strange… They may have some scheme to help work around this – because the connect from the 204. address immediately followed a DNS block of the connect from the 207 range address.

Related Posts

Blog Traffic Exchange Related Posts
  • What is a Ping? The word "ping" is used in computer networking. It's usually used to test and see if a machine is able to be "reached" or "talked to" over a network. The terminology reminds me of the concept of radar systems. I have a tendency to think of it as "bouncing a......
  • Modern Computer Viruses are almost NEVER from whom they claim to be from This is one that I've probably talked about before, but it's worth rehashing because of a call I had this afternoon. A customer had been receiving phone calls and email messages from folks asking that he stop sending them a virus. Essentially all of the viruses were claiming to be......
  • Microsoft Outlook - duplicate email messages Part II This is part II, click here for part one of the saga... Okay, so I revisit to install Microsoft Office 2003 SP2 and hope that solves it. Somewhere along this time, I had also found a suggestion of removing the entire mail PROFILE and creating a new one. *(The theory......
Blog Traffic Exchange Related Websites
  • Money Merge Account Analysis Pt 10 If you have not yet done so, please read part 1, part 2, part 3, part 4, part 5, part 6, part 7, part 8, and part 9 of this series first, then read on. I received a number of emails after part 5 where I mentioned the HELOC use,......
  • Cabrillo Isle Marina Phone: 619.297.6222 Average Water Depth: The marina has not supplied current information. Please call the number listed above to get exact depth information. Marine Standby Channel: Marina management monitors both Channels 16 and 69. If you cannot reach them by radio, they are accessible by phone during business hours.......
  • Prosper Estimated Return Guidance Pessimistic Example -- aka PML #5 -- Pay off high interest home improvement cards In my Friday post, I encouraged everyone to think for themselves when it comes to estimated return guidance. It is after all only an estimate. Today, I would like to pimp a listing I have bid on that I feel demonstrates a great return loan, but it is a fairly......
PDF24    Send article as PDF   

Similar Posts


See what happened this day in history from either BBC Wikipedia
Search:
Keywords:
Amazon Logo

Leave a Reply

You must be logged in to post a comment.


Switch to our mobile site