Re: [exim] How to not reply to bad mail

On Fri, Nov 21, 2008 at 06:52:42AM +0800, W B Hacker wrote:

> whitelist the odd idiot who thinks the price of a Linux or *BSD CD makes
> hime into a mail service w/o need of fixed-IP, MX and PTR RR.

Is there an RFC specifying that you need a static IP and DNS entries
--- or the other way round, is there an RFC specifying that receiving
hosts can/should/must require sending hosts to have them?


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http://en.wikipedia.org/wiki/Posting_style