[quote user="bryroller"]
Sounds like a viable option because (I believe) there is much less administration than I currently have to do and it is free. Change my MX records and it should start working - sounds similar to Postini, et al.
http://www.mxguarddog.com/
I currently use transaction filters, content filters, blacklisting, DNSBLs, SpamHalter, ClamWall (with optional spam definitions) and my Mercury/32 system processes 69,000+ messages daily. Keeping on top of the spammers is still difficult. I cannot block delivery from any part of the world (I add that because I am sure someone will offer that as a "solution"). GrayWall has caused me some issues due to form messages (PHP, etc.) not being able to "retry" delivery so I have it turned off.
Very interested in any opinions or alternatives anyone has to offer.
[/quote]
Like you I have turned GrayWall off and that appears to have made little difference - my spam levels remain very low. DNSBL & transaction filters stop the majority from even entering the server, and ClamWall & SpamHalter stop most of those that are accepted. I don't bother with content filters.
I have not used MX Guarddog but it seems a novel way to provide a free solution.
[quote user="bryroller"]
<P>Sounds like a viable option because (I believe) there is much less administration than I currently have to do <I>and</I> it is free. Change my MX records and it should start working - sounds similar to Postini, et al.</P>
<P><A title=http://www.mxguarddog.com/ href="http://www.mxguarddog.com/" mce_href="http://www.mxguarddog.com/">http://www.mxguarddog.com/</A></P>
<P>I currently use transaction filters, content filters, blacklisting, DNSBLs, SpamHalter, ClamWall (with optional spam definitions) and my Mercury/32 system processes 69,000+ messages daily. Keeping on top of the spammers is still difficult. I cannot block delivery from any part of the world (I add that because I am sure someone will offer that as a "solution"). GrayWall has caused me some issues due to form messages (PHP, etc.) not being able to "retry" delivery so I have it turned off.
</P>
<P>Very interested in any opinions or alternatives anyone has to offer.
</P>
<P>[/quote]</P>
<P>Like you I have turned GrayWall off and that appears to have made little difference - my spam levels remain very low.&nbsp; DNSBL &amp; transaction filters stop the majority from even entering the server, and ClamWall &amp; SpamHalter stop most of those that are accepted.&nbsp; I don't bother with content filters.</P>
<P>I have not used MX Guarddog but it seems a novel way to provide a free solution. </P>
