Global Blacklist Problem

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mgsuzen
Posts: 2
Joined: Tue Feb 25, 2020 3:31 pm
How did you hear about Mailcleaner: web

Global Blacklist Problem

Post by mgsuzen » Thu May 14, 2020 5:50 pm

Hi;

I use to MailCleaner both for sending and receiving mail. Mailcleaners External ip address been blacklisted a lot lately.(spamhouse, zen, CBL, etc.)

where am I doing wrong ? what I need to check ?
nomad
Posts: 84
Joined: Fri May 17, 2019 10:33 pm
How did you hear about Mailcleaner: Google

Re: Global Blacklist Problem

Post by nomad » Fri May 15, 2020 12:11 am

- Check if you accidentally became an open relay.
- Check your relayed messages. Maybe one of your domains are sending spam mails. MC only checks for Virus for outgoing mail, not spam.
mgsuzen
Posts: 2
Joined: Tue Feb 25, 2020 3:31 pm
How did you hear about Mailcleaner: web

Re: Global Blacklist Problem

Post by mgsuzen » Mon Jun 01, 2020 1:18 pm

There are no open relay connection on my mail server and my MC external.
Last time I had a blacklist problem, there wasn't a lot of mail sent or relayed on the MC and on my mail server.
nomad
Posts: 84
Joined: Fri May 17, 2019 10:33 pm
How did you hear about Mailcleaner: Google

Re: Global Blacklist Problem

Post by nomad » Tue Jun 02, 2020 2:48 pm

Unless the IP had a blacklist history that you didn't realize up till now, clearly someone; using your MC installation as a relay, is spamming.
Even if they don't think they are sending spam, the recipients surely does. Or sometimes they outright send spam to honeytrap addresses.

You better check abuse reports to find out which domain is sending it and kick them out.
Nobody lists your servers for no reason, especially when it's multiple RBLs.
johan
Posts: 10
Joined: Wed Mar 29, 2017 9:54 am
How did you hear about Mailcleaner: internet

Re: Global Blacklist Problem

Post by johan » Thu Jun 18, 2020 10:34 pm

mgsuzen wrote:
Mon Jun 01, 2020 1:18 pm
There are no open relay connection on my mail server and my MC external.
Last time I had a blacklist problem, there wasn't a lot of mail sent or relayed on the MC and on my mail server.
there is always the possibility that the netrange you are in.. gets flagged and listed ..
next time you get listed .. check IPadresses neighbouring you ..

but much points to what Nomad writes..
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