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

  • 32 Users Found This Useful
Was this answer helpful?

Related Articles

SMTP error codes for Yahoo Mail

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

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...

Email Configuration Recommendations

There are two protocols that is frequently in use to retrieve email contents, which is POP3 and...

Email Rejected by DNSBL

DNSBL is a blocking list that keeps a record of specific IP address/network with spamming...

Spam Mails and How to Deal with Them

Spam mails, also known as junk mails, are unsolicited mails sent in bulks. It is a form of...