Dňa 9. novembra 2025 17:56:51 UTC používateľ Marc MERLIN via Exim-users 
<[email protected]> napísal:

>> Your system may not be configured for IPv6 ... except for DNS.
> 
>Correct. It wasn't before its hardware/OS upgrade either. I do need to
>look into that eventually, but it hasn't happened yet.

AFAIK exim has useful options for that:

+ disable_ipv6 -- global option, does as name says
+ dns_ipv4_lookup -- global option, does as name says
+ ipv4_only -- transport option, IPv4 only DNS
+ exclude all IPv6 in transport (::/0)

I would suggest do not modify GAI settings, nowadays system does
that properly.

BTW, more than 50 % of the world does IPv6, it is really time, to start
with it.

regards


-- 
Slavko
https://www.slavino.sk/

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