guss77 Posted March 7, 2006 Share Posted March 7, 2006 Hi people. First time I'm posting at spamcop forums. I have an issue where I'm trying to send email to another mail server which blocks me because I don't have a reverse DNS lookup for my server's IP (not that its wrong or anyhing - simply there is no DNS configured for reverse lookups on that IP block. I can't even do anything about it, because I'm co-located and have no control over this). I've contacted the mail administrator for that domain, and I'm trying to convince him that that behavior is broken and should be fixed, but I'm having little luck getting to him - he keeps waving at "an RFC that's out there" that supposedly dictate that this is valid but refuses to point out exact details. My questions: *) Is it ok to block mail from IP addresses that cannot be reverse resolved (in my case the name in the EHLO command is valid and resolved, but the IP that it resolves to then fails to reverse resolve) ? *) If its not - can someone point me at the standard that says that it cannot, as I've read several dozens RFC in the last few days and none mention that. *) If it is indeed a valid situation and the mentioned domain is indeed broken - who can I complain too besides the mail administrator for that domain that would make a difference (something like SpamCop that deals with SMTP standard compliance instead of spam) ? Also: what is the relation between this site and spamcom.com ? TIA Link to comment Share on other sites More sharing options...
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