anybody here from verizon's e-mail department?

[Paul Vixie <paul () vix com>]

last week i became unable to send mail to verizon users:

    Diagnostic-Code: X-Postfix; host relay.verizon.net[206.46.232.11] said:
        550 You are not allowed to send mail:sv18pub.verizon.net
            (in reply to MAIL FROM command)

(the above was from me trying to ask postmaster () verizon net about it)

i'd hate to think that i've simply sent too many why-are-you-spamming-me
complaints and have been blacklisted.