On Aug 23, 2010, at 11:32 AM, LuKreme wrote: > On 19-Aug-2010, at 13:08, D G Teed wrote: >> >> The only place I've seen which publicly talks about >> the reverse DNS requirement is AOL. > > Craigslist requires that the reverse DNS match EXACTLY the mail server name. > So, if your mailserver doubles > as a dns server and your primary rDNS point to ns1.mydomain.tld and you send > mail from mail.mydomain.tld, craigslist will reject it.
why mail from is from your host name. your host name should say mail.mydomain.tld = ipaddress , ip address should = mail.mydomain.tld we are talking about sending mail right ? receiving for the domain, thats a different record. > > They also never answer admin mail, so I've just told people using my > mailservers to use gmail for craigslist since I don't have spare IPs lying > around. > > I used reject_unknown_reverse_client_hostname and I tried > reject_unknown_client_hostname but that as very bad. Don't go there. i would love to implement reject_unknown_client_hostname. the world would be a better place. i can see many reasons why having a fully qualified name is appropriate. A mail server for one should be able to say yes to ip = name and name = ip.
