Re: [ipv6-wg] Real-world IPv6 SMTP experience
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To: Florian Weimer <>
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From: Gert Doering <>
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Date: Wed, 21 Dec 2005 15:50:52 +0100
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Cc: Gert Doering <>,
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Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys
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Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=testkey; d=space.net; b=EICMmhQoKvJQrFASaMd8SHdBXrr+1RnRMRfUASWD/4MhQ6EhoW3HDPlVxmP92mH3 ;
Hi,
On Wed, Dec 21, 2005 at 03:23:27PM +0100, Florian Weimer wrote:
> Selective quoting. 8-) There are a couple more MX records:
>
> greenie.muc.de. 900 IN MX 15000 mx1.muc.de.
> greenie.muc.de. 900 IN MX 16000 mx-150.space.net.
> greenie.muc.de. 900 IN MX 16500 mx-200.space.net.
Indeed.
> These are IPv4-only, and they help to pamper over the AAAA-masks-A
> issue. If a broken Exim installation sees just this record for
> kirk.greenie.muc.de:
>
> kirk.greenie.muc.de. 9m16s IN AAAA 2001:608:4::3
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> it still falls back to the other MXes.
So if I understand this correctly, having a v4-only backup MX should
solve all problems commonly experienced?
Gert Doering
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