JHM via Exim-users <exim-users@exim.org> (Fr 12 Nov 2021 22:14:12 CET): > [code] > disable_ipv6 = true > [/code]
Shooting into the dark as well. If IPv6 is enabled, Exim tries to resolve names as A and as AAAA records. Independend on your system's IPV6 setup. The gethostinfo(3) depends on your system's setup and doesn't even attempt AAAA lookups if there is no chance to use the information, but in parts of the code Exim doesn't rely on the gethostinfo(3) call, but talks directly to the resolver (found in /etc/resolv.conf). So, if you resolver behaves strange (imposing a 30s delay by e.g. not responding to AAAA queries), the root cause of delay is outside of Exim, while disable_ipv6 = true is a good mitigation. -- Heiko
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