[afnog] mail blacklisted

[Antonio Godinho]

It could also be that one of the mail accounts on the server has been 
compromised by many of the phishing messages and they are using it to send 
out spam.

On Tue, 18 Jun 2013 13:41:40 +0200 (CAT), Chris Wilson wrote
> Hi Kwas,
> 
> On Tue, 18 Jun 2013, Kwas Lee wrote:
> 
> > My server has been blacklisted to UCEPROTECTL1,BACKSCATTERER,SORBS-SPAM 
> > and MAILSPIKE-BL, am using atmail7 installed on centos 5.5 , the 
> > spamassasing is working fine.
> 
> The only way to solve the problem is to find out why you've been 
> blacklisted and fix it. Most likely your mail server is being used 
> to relay spam, regardless of your spamassassin which will never 
> catch 100% of it, or you are allowing outbound SMTP from your 
> network and one of your users in infected.
> 
> I suggest you closely examine the logs of your mail server to 
> identify spam messages being sent through it. The blacklists should 
> be able to provide the date and time of a spam message that caused 
> you to be blacklisted, which may help you if the spam has stopped.
> 
> I recommend that you check that users on your network are NOT 
> allowed to send email directly by SMTP out to the internet, only 
> through your mail server, and that this is enforced by your firewall.
> 
> Cheers, Chris.
> -- 
> Aptivate | http://www.aptivate.org | Phone: +44 1223 967 838
> Citylife House, Sturton Street, Cambridge, CB1 2QF, UK
> 
> Aptivate is a not-for-profit company registered in England and Wales
> with company number 04980791.
> 
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--
Antonio Godinho
B.Sc., MCP+I, MCSE, CCNA, CCNP
CIUEM
Maputo
Mozambique


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