Mail IP Blacklist by Yahoo

If your email is blaklisted by Yahoo, users will receive the following bounced back message.

Bounced Back Message:
421 4.7.0 [TS01] Messages from <0.0.0.0> temporarily deferred due to user complaints -
<0.0.0.0> ; see http://postmaster.yahoo.com/421-ts01.html

First find out the cause and resolved the matter.
Then visit the link below to request for removal from blacklist by Yahoo.

http://help.yahoo.com/l/us/yahoo/mail/postmaster/bulkv2.html

  • 33 Users Found This Useful
Was this answer helpful?

Related Articles

IP Address blocked by Autoban

Autoban is a security feature provided by the mail server for Windows-based hosting.The purpose...

SMTP error codes for Yahoo Mail

https://help.yahoo.com/kb/smtp-error-codes-sln23996.html

Why Email Falls into Junk/Spam Category

Every mail server may apply different spam filtering mechanism to filter out junk mails from...

Why Mail Sent to Mailing List Members is Rejected

Mailing list is a feature to allow users to forward mails to multiple recipients within the same...

Migrating email contents using IMAP protocol

Email contents from old server cannot be migrated to new server especially if both servers are...