Date: Mon, 25 Aug 2008 06:49:56 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Jeffrey Goldberg <jeffrey@goldmark.org> Cc: pete <bsdpete@thechristies.net>, freebsd-questions@freebsd.org Subject: Re: MTA advice ?? Message-ID: <48B24804.9080807@infracaninophile.co.uk> In-Reply-To: <60071053-118B-47FD-A988-40A18A88D576@goldmark.org> References: <20080824140625.txre8xer6s0ggwww@webmail.secureserverdot.com> <60071053-118B-47FD-A988-40A18A88D576@goldmark.org>
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Jeffrey Goldberg wrote:
=20
> Receiving mail directly will be more possible, but tricky. You will=20
> need to use a dynamic DNS system. Also do consider uptime and=20
> reliability. In the old days, if one MTA couldn't reach another it=20
> would hold stuff in its queue for four or five days. Now, most MTAs=20
> appear to be configured to give up after 24 hours. So if your=20
> mailserver is down for a day, mail will be bounced and never delivered =
> to you.
In which case those mail systems are not in compliance with the RFCs.=20
RFC 2821 Section 4.5.4.1 says:
Retries continue until the message is transmitted or the sender gives
up; the give-up time generally needs to be at least 4-5 days. The
parameters to the retry algorithm MUST be configurable.
ie. 4-5 days is the /minimum/ time to hold messages in the queue and
keep retrying.
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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