On Sat, Nov 13, 2021 at 10:14:34AM -0300, JHM via Exim-users wrote: > In my opinion as desktop end user, if the box where Exim is being
> installed does *not* have IPv6 enabled (and is explicitly disabled), then
> it should *not* be configured by default with IPv6 enabled.
Note that we are discussing some hypothesis, more or less plausible,
but there are no direct confirmations that problem is due to IPv6.
You have better to obtain strace/ltrace and/or extented debug output,
plus traffic dump and/or DNS logs for analysis.
--
Eugene Berdnikov