On Mon, 31 Jan 2005, Lee Dilkie wrote: > I think Gary asking something different. He wants to check if the "from" > domain has an MX record.
If the sending domain lacks both an MX and an A record, then Sendmail will not accpet mail from that domain unless you've enabled FEATURE(`accept_unresolvable_domains') AFAIK, no modern UNIX systems come with that feature enabled by default. > I wouldn't think you'd get many hits on this sort of test, anyone who's > gone through the trouble of setting up a domain has probably also > defined an MX record. But let us know if you do get any hits, I'm curious. If you're running a standard Sendmail installation, just do this: grep 'Domain of sender address .* does not exist' /var/log/maillog (or wherever your mail log lives.) I get tons of these; here's an example: Jan 20 06:20:44 www sendmail[25291]: j0KBKYsg025291: ruleset=check_rcpt, arg1=<[EMAIL PROTECTED]>, relay=bgm-68-175-203-192.stny.rr.com [68.175.203.192] (may be forged), reject=553 5.1.8 <[EMAIL PROTECTED]>... Domain of sender address [EMAIL PROTECTED] does not exist -- David. _______________________________________________ Visit http://www.mimedefang.org and http://www.canit.ca MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
