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

Migrating email contents using IMAP protocol

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

How Email Password is Stolen

Spamming activity happens when user's email password is stolen and being used by hackers/spammers...

iOS IMAP Error "Unable to Move to Message" to Trash Folder

When configure IMAP on an Iphone IOS device, you will get the follow error when trying to delete...

SMTP error codes for Yahoo Mail

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

Disable Junk folder in MS Outlook

Some emails will fall in Spam folder due to spam-trigger words detected or some other criteria....