Carlos Mogas da Silva skrev den 2022-12-19 11:57:
Hi list.
My incoming messages are getting R_SPF_DNSFAIL and an error on the
Authentication-Results header:
spf=temperror
(mail01.r3pek.org: error in processing during lookup of
no-re...@cttexpresso.pt: DNS error)
for cttexpresso.pt netblocks are authorized 492,110 individual IPv4
addresses so many ips why not just +all in there spf ?
for r3pek.org change spf to "v=spf1 ip4:195.201.255.103
ip6:2a01:4f8:c2c:4d63::3 -all" this will disable needs for dns resolve
of ips, it might help while keeping it valid spf
I see the DNS request on my DNS server and a "working" reply going
out. What can cause this error
and/or how can I debug it?
try avoid to many dns querys
