Spam:- RBL's Not working

[lhamu]

Hi everyone,

Facing issue with controlling spam these days on my zimbra 8.8.15. Mainly IT desks emails that are coming in. Blocked using the email addresses but it keeps changing resulting in blacklisting of the server by baracudda,spamcop etc. Also if anyone has any experience in identifying compromised email ids through these type of Spam? Would be very grateful. many thanks in advance.
just a sample of the spam email id :
Dear E-mail User,

We are in the process of updating our database and Zimbra Web-mail
account center and we noticed that your email did not pass the
verification/update process on which we are working right now.
In order to have the highest security on the Internet and prevent your
account from being closed/deleted, you must update it so that we know it
is a currently used account.

To complete your account confirmation, UPDATE HERE
<https://greyvenstein.000webhostapp.com/bt.html>

[zimico]

Hi,

Please refer this: https://wiki.zimbra.com/wiki/Spamming_troubleshooting
Note: If you use zimbra 8.8, the right path for postsuper is /opt/zimbra/common/sbin/postsuper

Regards,
Minh.

[L. Mark Stone]

My anti-spam best practices blog post gets a lot of page views every month; it's what I do in my BSP hosting environment:

https://www.missioncriticalemail.com/20 ... ices-2019/

Hope that helps,
Mark