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[Discuss] Verizon blacklisted me

Check your IP here

-----Original Message-----
From: at
[ at] On Behalf Of Drew Van Zandt
Sent: Wednesday, August 06, 2014 12:40 PM
To: Daniel Barrett
Cc: blu
Subject: Re: [Discuss] Verizon blacklisted me

Many folks blacklist dynamic IP ranges.  Often, even static IPs are in
ranges that are "known" to be dynamic, and thus get blacklisted.

*Drew Van Zandt Cam # US2010035593 (M:Agapito Acosta) *

On Wed, Aug 6, 2014 at 12:38 PM, Daniel Barrett <dbarrett at>

> Last week without warning, all my outgoing FIOS email started getting
> rejected by Verizon's SMTP server,, with this error:
>   500 5.7.0 Unknown AUTH error -1 (Internal authentication error)
> I looked up "500 5.7.0," and it means my IP address has been
> blacklisted. (For no reason that I can imagine.) No client changes
> happened on my end to cause this.
> Has anyone else ever experienced this and gotten it fixed? The Verizon
> support people I've spoken with don't seem to have the knowledge to
> understand a server-side problem like this. They keep asking if I can
> log into their webmail server, what my Outlook settings are,
> etc. Eventually they check with some mysterious "email server team,"
> who claims my IP address is not blacklisted... and yet
> is giving me the above SMTP error "500 5.7.0" every
> time.
> In the meantime, I have signed up with a different outgoing email
> provider, which is why I could send this note. :-)
> Thanks for any tips...!
> --
> Dan Barrett
> dbarrett at
> _______________________________________________
> Discuss mailing list
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