On Tue, Dec 29, 2020 at 10:20:51AM +0700, Victor Sudakov via Exim-users wrote:
> The packet dump is available at http://admin.sibptus.ru/~vas/2.pcap
> 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?
Normally tcp connection initiator should respond with ACK to SYN+ACK.
It looks like firewalling issue, I can't imagine how to produce such
behaviour with socket API.
--
Eugene Berdnikov
