Interesting... I think I understand what's happening. spamdyke is trying to find the MX record for bounce.e.groupon.com and receives an MX response that says "bounce-mx.exacttarget.com". Then it tries to find an IP address for bounce-mx.exacttarget.com by searching for A or CNAME records. Or rather, that's what it should do. Due to an oversight on my part, it searches for A, CNAME and MX records because I was lazy and sent the same list of types to the function that tries to find the IP that was used to find the MX.
As it happens, bounce-mx.exacttarget.com has both an A and a MX record associated with it, which is legal (but stupid). When spamdyke receives the MX record it asked for but didn't expect, it assumes the remote nameserver is broken and stops with an error. Due to a second oversight on my part, that error triggers the filter instead of failing gracefully. So, two bugs. I'll get them fixed. :) Thanks for reporting this! -- Sam Clippinger On 3/11/11 10:51 AM, Eric Shubert wrote: > I did a detail log, and captured one of these. It says: > ERROR: DNS response for bounce-mx.exacttarget.com: expected type A, > CNAME but received type MX > FILTER_SENDER_NO_MX domain: bounce.e.groupon.com > > From the spamassassin host, I get: > [shubes@tacs-mail ~]$ host bounce-mx.exacttarget.com > bounce-mx.exacttarget.com has address 66.231.91.236 > bounce-mx.exacttarget.com mail is handled by 10 bounce-mx.exacttarget.com. > [shubes@tacs-mail ~]$ > > I don't see anything wrong here (but could be misunderstanding > something). Is spamdyke getting an MX record back before a type A (or > CNAME) record? Is a wildcard perhaps involved somehow? > > One other thing. I'm under the impression (from the dyndns.com site) > that MX records can (should?) not point to CNAME records. If this is > indeed true, then I would think that spamdyke shouldn't be looking for a > CNAME record which corresponds to the MX (as indicated in the message). > > As always, thanks Sam. > > _______________________________________________ spamdyke-users mailing list spamdyke-users@spamdyke.org http://www.spamdyke.org/mailman/listinfo/spamdyke-users
