Friday, July 8, 2016

linux - Unable to send email to Verizon addresses. All other addresses fine

One of the users on my server (96.31.68.20) is having trouble sending email to any Verizon accounts. It looks like my server has been blacklisted by them for some reason. The message in the email is:




yAAAn@verizon...net
SMTP error from remote mail server after initial connection:

host relay.verizon.net [206.46.232.11]: 571 Email from
96.31.68.20 is currently blocked by Verizon Online's anti-spam system. The
email sender or Email Service Provider
may
visithttp://www.verizon.net/whitelist
and request removal of the block.
110510




There's no unusual levels of mail activity coming from my server, and I've checked all the blacklist sites and the IP does not appear there.




I used the online white request on Verizon's site, and I got this message:




After investigation, Verizon Online
Security has determined that e-mail
from your IP address will not be
allowed access to the Verizon Online
e-mail domain due to one or more of
the following reasons:




Your IP has been blocked because of
spam issues or because your ISP
indicates that it is dynamically
assigned



No Reverse Hostname associated with
your IP address.





As far as I can see this is rubbish... or am I looking in the wrong places?



What other information do I need to be able to diagnose this?



I'm happy to make changes if necessary, but I've no idea where to go next.



Help!



EDIT: Might be worth noting that I've tried the removal request 4 times over two months. Same result each time.

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