[wplug] Problems sending email

[Chris Romano]

On Thu, Nov 19, 2009 at 9:04 AM,  <salm at servanttechnology.com> wrote:
> Hi all,
>
> I'm running qmail with courier on a Linux server co-located in downtown
> Pittsburgh.  A couple weeks ago I started having problems sending email
> from Thunderbird.  But, I could still send through squirrelmail.  I have
> my email accounts setup with IMAP and use SSL to download email and TLS to
> upload.
>
> I have never known my email server to send/forward any spam.  I run
> spamassasin on the server.  So, it shouldn't be on any blacklists.  But, I
> didn't check.
>
> So, two nights ago I thought I would just fix the problem.  So, I checked
> out the server and everything looked fine.  I bounced all the email
> processes.  Confirmed everything was fine but still had the same problem.
> I then bounced the server.  No help.
>
> I tried changing Thunderbird settings by removing all security settings
> just went straight STMP and IMAP.  No help either.
>
> So, I started thinking about other common denominators.  Two other people
> using my email server use Verizon and they have the same problem.  I
> connect from NYC and use Verizon, again have the problem.  I connect from
> home and use Armstrong Cable.  I never had a problem from Armstrong Cable,
> I verified last weekend by sending an email and my wife has never had a
> problem either.
>
> Is Verizon blocking something?  Has anyone ever had a similar experience?
>
> What blacklist site should I check?
>

I believe that comcast and verizon used to block outgoing email to any
server other than their own.  It was part of their "anti-spam" policy.
 Not sure if they still do that or not.

That could be the problem.

What exactly is the error that your receiving?

Good luck.

Chris
-- 
"They that would trade essential liberty for a little temporary safety
deserve neither." -- Benjamin Franklin