[ipv6-wg] Real-world IPv6 SMTP experience
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Gert Doering
gert at space.net
Wed Dec 21 15:50:52 CET 2005
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 > > 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 -- NetMaster -- Total number of prefixes smaller than registry allocations: 81421 SpaceNet AG Mail: netmaster at Space.Net Joseph-Dollinger-Bogen 14 Tel : +49-89-32356-0 D- 80807 Muenchen Fax : +49-89-32356-234
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