xaf via mailop skrev den 2026-08-27 15:48:
Benoit Panizzon via mailop a écrit le 27/08/2026 à 10:26 :
Until shortly, this did not cause any issues as vm.imp.ch has a
matching SPF entry.
permerror result: ipv4 and ipv6 are unknown mechanisms.
https://mxtoolbox.com/SuperTool.aspx?action=spf%3avm.imp.ch&run=toolpage
As Rainer suggests, a single DKIM key for all and a CNAME record for
each domain is arguably the best solution.
CNAME breaks DNSSEC
who cares if domain is in localdomain :=)
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