Jeremy Harris via Exim-users wrote:
> On 29/12/2020 11:03, Victor Sudakov via Exim-users wrote:
> > Evgeniy Berdnikov via Exim-users wrote:
> > > On Tue, Dec 29, 2020 at 10:20:51AM +0700, Victor Sudakov via Exim-users wrote:
> > > > You can see from it that exim's host opens a TCP connection to the
> > > > clamav host, the clamav host replies with SYN+ACK, but the exim host sends a TCP RST
> > > > immediately. Why could that happen?
>
> > > I can't imagine how to produce such
> > > behaviour with socket API.
> >
> > Neither do I. Moreover, the problem began after upgrading the OS from
> > FreeBSD 11 to 12.2-RELEASE-p1, and exim to exim-4.94_4. Maybe the OS is
> > to blame.
>
> Can you manage to get a syscall trace of exim's actions, isolating those
> for that specific socket?
I hope this is what you mean:
https://termbin.com/zjsv
This is a test mail sent by SMTP and what's happening to it.
--
Victor Sudakov, VAS4-RIPE, VAS47-RIPN
2:5005/49@fidonet
http://vas.tomsk.ru/
