Yahoo Email Issues

[serverxy]

Hello,

Yahoo Server bounce back emails from all my corporate customers. I would like to know how i check which of my account sending more emails to yahoo..

I will advice him to get dedicated IP from us.

421 4.7.0 [TSS04] Messages from x.x.x.x temporarily deferred due
to user complaints - 4.16.55.1; see
Error: "421 4.7.0 [XXX] Messages from x.x.x.x temporarily deferred due to user complaints - 4.16.55.1" when sending email to Yahoo | Postmaster Help - SLN3434

 

[cPanelMichael]

Hello,

The following document is a good place to start:

How to Prevent Email Abuse - cPanel Knowledge Base - cPanel Documentation

Additionally, you can browse through the threads listed on the link below to see examples of how other users have addressed similar problems:

outgoingspam | cPanel Forums

Thanks!

 

[serverxy]

everything is done already, server is 1.5 year old

 

[cPanelMichael]

Hello,

Were you able to review the second URL to see threads where other users were also attempting to find the source of outgoing SPAM? Here are a couple of threads where this is discussed:

Check which script or file sending spam mail
Spammer using server to send out spam email

Thank you.