On 09/07/11 19:00, lee wrote: > Erwan David <[email protected]> writes: > >> On 09/07/11 18:15, lee wrote: >>> Andrew McGlashan <[email protected]> writes: >>> >>>> Can rDNS lookups for different IPs return the same result such as >>>> "mail.example.com" or must each IP have it's own unique PTR record >>>> name? >>> >>> Apparently they can, though I don't like the idea. For outgoing email, >>> you need to make sure that the hostname given in [E]HLO statements and >>> the IP address of the host connecting to a remote MTA always match when >>> the remote MTA resolves either. You may send me some test mails to >>> check. >>> >>> >> >> My mail server is behind a NAT gateway in IPv4, and directly connects in >> IPv6. What shoud I configure it for HELO : the name of the NAT gateway >> (for IPv4) or its own name (IPv6 only from outside) ? > > Hm. Can you send me an email through IPV6? My guess is that you can > not, and that you would need to configure the [E]HLO depending on which > version of the protocol you use to send outgoing messages. But then, > I'd have to look up how exactly exim4 is doing the rDNS checking to be > sure.
Depends on your MX But all my emails to debian ML go through IPv6 -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
