Verizon email problems

Bruce Dawson jbd at codemeta.com
Tue Nov 11 16:49:06 EST 2003


On Tue, 2003-11-11 at 17:30, Ed Robbins wrote:
> Hey everyone,
> 
> Joshua asked me to summarize my findings on his email problem.  The lack 
> of an MX record for the domain threeofus.com is what appears to be 
> triggering it.  To investigate I telneted to relay.verizon.net on port 
> 25 did my greeting and then issued  mail from:ed at erobbins.com.  Lo and 
> behold it was rejected with the same message that his wife was getting.
> 
> Ok, I knew I had a valid mx entry so I went to my mail server and 
> discovered that verizon attempted to send me email.  Really what they 
> where doing is going through the process until they receive the 
> Recipient Ok message.  It just so happens that I had a Level 3 spam 
> filter running and it blocked verizon from getting this far.  Aha! 
> 
> Ok, I fixed that and tried it again, but I had the same result...hmmm.  
> I bet they blacklisted my address, I have found this to be a pretty 
> typical thing that is done.  Ok, onto my next attempt.  I have several 
> domains setup so I picked one and made sure everything was configured 
> correctly and eureka!  It worked.
> 
> Now the question is, how long is my email address blacklisted for????

I suspect its not really blacklisted, but denied because of:

    [jbd at bruce jbd]$ host edrobbins.com
    edrobbins.com has address 216.21.229.209
    [jbd at bruce jbd]$ host 216.21.229.209
    Host 209.229.21.216.in-addr.arpa not found: 3(NXDOMAIN)

You too have no reverse DNS entry for your IP address.

BTW: I note that no one has commented on this. Are people in disbelief
that this could be the problem, or is it that no one is understanding
what I'm saying?

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