Hi.

A starting point would be to tighten your rules in Global -> MTA settings.

For me, all 'Protocol Checks' are normally ticked. Do some research on the impact of these.

Regards.


On Tue, Jul 22, 2014 at 6:17 PM, Cynthia Wahome via skunkworks <skunkworks@lists.my.co.ke> wrote:
Hello all
I currently am running zimbra open edition as a mail server for our org.
Things were working ok for a month or so until all of a sudden a lot of spam
Started coming in.my server has already been blacklisted twice.
It has been listed again and I don't want to delist it yet.
I have checked my network and cleaned them of any malware or spam/viruses

Before I purchase anything is there anything I can do or any application
I can use to do a deep level checking of the spam and block them?
When I check the lot files,I don't see any account that is compromised.
What can I do?

Any help is highly appreciated.

Regards
Cynthia


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