[Eug-lug] Looking for e-mail config help/consult

[Marc Baber]

Our IP address was recently added to CBL (blocklist/blacklist) for 
reasons we cannot fathom and that they haven't made at all clear (and 
apparently will not-- there is no way to contact them, seek due process, 
assert innocence until proven guilty or any such quaint historical 
nonsense).  Their web site claims that they only list "compromised" 
systems (viruses/open proxies), but we're running a very tight firewall 
with CentOS 5 -- a standalone server at Slicehost.com that does no 
address translation for any other machines (a common way that 
compromised systems are masked).

I suspect the problem may have something to do with our domain name not 
matching our e-mail addresses (we receive our e-mail through a 3rd party 
service) or some other configuration "problem".

http://cbl.abuseat.org/namingproblems.html describes CBL's criteria for 
RFC-compliant HELO responses and I suspect that's where we've run afoul 
of their detection scheme, but this is rather out of my field and so I 
am seeking help/consulting to understand and resolve the problem.  This 
is an urgent problem since email to our online store customers 
confirming their orders is probably not being delivered, thus, a rapid 
turn around will be most valuable to us.

Thank you
Marc 541-485-8446 (Eugene)