On Thu, Dec 08, 2022 at 10:47:18PM +0300, Evgeniy Berdnikov via Exim-users wrote:
> On Thu, Dec 08, 2022 at 12:22:13PM -0700, The Doctor via Exim-users wrote:
> > On Thu, Dec 08, 2022 at 09:24:19PM +0300, Odhiambo Washington via Exim-users wrote:
> [...]
> > > >>> host in "5.34.207.0/24"? yes (matched "5.34.207.0/24")
> > > >>> host in host_reject_connection? yes (matched "+host_rejects")
> > > LOG: refused connection from [5.34.207.3] (host_reject_connection)
> > > 554 SMTP service not available
> > > root@gw:/usr/home/wash #
> >
> > Still seeing
> >
> > netstat -a | egrep smtp
> > tcp4 0 0 exploreedmonton..smtps 5.34.207.189.26526 SYN_RCVD
> > tcp4 0 0 comparealbertapo.smtps 5.34.207.190.30872 FIN_WAIT_2
> > tcp4 0 0 204.209.81.148.smtps 5.34.207.114.57546 FIN_WAIT_2
>
> Rejection with status code 554 requires established TCP connection.
> Study mainlog to check whether connections are rejected.
>
> However, absense of numerous connections in ESTABLISHED state is a hint
> that rejection works.
>
> If you don't want TCP connections, use packet filtering on kernel level
> instead of Exim's configuration options.
I am surprised that my firewall ACL is not getting this
in a switch!
> --
> Eugene Berdnikov
>
> --
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--
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