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Date: Sat, 06 Sep 2008 07:28:40 +0900
From: =?ISO-2022-JP?B?GyRCJD8kXiRBJGMkcxsoQg==?= <tamachan3@gmail.com>
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To: CommuniGate Pro Discussions <CGatePro@mail.stalker.com>
Subject: Re: greylisting with CGPro
References: <list-47467679@mail.stalker.com> <list-47504940@mail.stalker.com> <list-47512996@mail.stalker.com> <list-47513028@mail.stalker.com> <list-47528400@mail.stalker.com>
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Mark Nipper wrote:
> That's incorrect. Even RFC 821 (http://tools.ietf.org/html/rfc821) 
> states that a client should retry after receiving a 400 level message. 
> This might be ignored by much older clients of course, but there's 
> nothing much to be done about substandard implementations.

RFC 2821 states that the SMTP client is "encouraged" to try again.

> Either way, you always risk losing legitimate mail by greylisting.

I totally agree with you. :-)

-- 
たまちゃん / tamachan3@gmail.com