MailScanner suddenly stopped working and screwed up everything

[jan gestre]

On Fri, Feb 6, 2009 at 10:56 PM, Martin Hepworth <maxsec at gmail.com> wrote:
> 2009/2/6 jan gestre <ipcopper.ph at gmail.com>:
>> Hi Guys,
>>
>> I've several mail servers running (postfix + dovecot + mysql +
>> mailscanner) that has been up for a long time now and suddenly it
>> stopped working one by one. It began by users experiencing bouncing
>> emails even though the user exist then it became worst, all emails is
>> now being tagged as spam even those from yahoo and gmail. I suspect
>> MailScanner might be causing the issue so I turned it off but the
>> server keep on rejecting emails because of postfix's
>> smtpd_client_restrictions rule that blocks emails if it came from an
>> ip address listed on spamhaus.org, but after disabling that parameter
>> emails from sites like yahoo and gmail still gets blocked according to
>> postfix it's listed in sbl-xbl list, I know for a fact that this
>> shouldn't suppose to happen but it did. Anybody ever experienced this?
>> What's the workaround, I'm stumped, I have no idea why it suddenly got
>> screwed.
>>
>> TIA
>>
>> Jan
>> --
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>>
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>>
>
> Jan
>
> do you pay for the spamhaus feed? If not this could be the problem..
>
> http://www.spamhaus.org/organization/dnsblusage.html
>

I've read the dnsblusage from spamhaus and I'm sure the volume of
emails we're getting is nowhere near that number. Here's an info of
one of the servers:

Volume: 2000++ messages/day 4 virtual domains

Hardware: AMD Athlon 64 X2 4800, 4GB RAM, 250GB Raid 5.

Software: CentOS 5, Postfix, Dovecot, MySQL, PostfixAdmin, SpamAssassin

RBLs:  MTA,  MailScanner

Virus Scanners: F-Prot Anti virus

Is there's a way to uninstall MailScanner?

TIA