Always Blacklist (SMTP HELO value forged)

Discuss your pilot or production implementation with other Zimbra admins or our engineers.
juanjose
Posts: 3
Joined: Wed Feb 10, 2021 5:37 pm

Always Blacklist (SMTP HELO value forged)

Postby juanjose » Thu Sep 16, 2021 7:40 pm

Hello friends, my zimbra mail server has been blacklisted on spamhaus.org
The error message is:



(IP, UTC timestamp, forged HELO value)
xxxxxxxxxxx 2021-09-16 13:20:00 Qkxioqckr.lkoiaiccmiofdmc.com
xxxxxxxxxxx 2021-09-15 17:50:00 Cejuio.lihd-mokpiuqi.com
xxxxxxxxxxx 2021-09-15 15:30:00 Fodrq.zrlkzlmeack.com
xxxxxxxxxxx 2021-09-15 13:35:00 Yadou.466lzaijaex.com
xxxxxxxxxxx 2021-09-15 12:10:00 Pzqjfiaa.ykkxzwkk.com

The first detection was (UTC) 2020-12-10 16:40:00
The last detection was (UTC) 2021-09-16 13:20:00

Could you help me to solve it urgently please! I tried everything and I can't find the problem, I am a newbie in this spam things. thanks.


Return to “Administrators”

Who is online

Users browsing this forum: No registered users and 37 guests