On Wed 05/Nov/2014 12:20:38 +0100 Hanno Böck wrote: > Am Wed, 05 Nov 2014 08:19:36 +0100 > schrieb Alessandro Vesely <[email protected]>: > >> Not according to https://dmarcian.com/spf-survey/hboeck.de >> >> If you look at the bottom of that page, that tool found 4 occurrences >> of the same block, and "compiles" your records into one that works >> without requiring further lookups from the receiving server: > > Ah ok, now I understand, it doesn't only lookup the includes, it also > resolves all a-records. > > Is there any indication that many a-records in SPF are a bad thing? > Any limit on that in RFCs?
Yes, DNS Lookup Limits, http://tools.ietf.org/html/rfc7208#section-4.6.4 You cannot have more than 10 "a". However, in the DNS you don't have to limit to one address per "a"-name. Ale ------------------------------------------------------------------------------ _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
