Tracy wrote: >At 10:38 1/13/2004, Jeffrey Laramie wrote: > > >>Right, but getting back to Dale's original concern, his virtual domains >>won't fail the remote server's RDNS check if the DNS for his SMTP server >>is configured correctly. And he shouldn't be afraid to use RDNS to check >>the validity of a remote server. Even a couple of years ago spoofing was >>relatively rare and a mail server that failed RDNS was not a big deal. >>Today about half of the spam I see is rejected by RDNS before my users >>see it. IMHO any SMTP server that fails RDNS is broken and should be fixed. >> >> >True. However, most RDNS checks today are to determine that a mail server >(ie. a connecting IP address) *has* a PTR record, not to match the PTR >record with the HELO or MAIL FROM domain. > >
Interesting. Does XMail compare domains or does it just check for existence of the PTR record? I don't think I've ever seen this documented anywhere. - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
