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[Discuss] Verizon blacklisted me

On 8/6/2014 12:39, Drew Van Zandt wrote:
> 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>
> wrote:
>> 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)

My interpretation of his error is different from yours.  From what I
see, he is a Verizon customer, and his machine connected to Verizon FIOS
is unable to send email via the Verizon server.  Ordinarily this sort of
configuration would be bog-standard; it's what they want their customers
to do.  In this case, however, they've instituted some sort of ban in
which his Verizon IP is no longer permitted to send email via the
Verizon server.

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