> >Lately I have had many SMTP connections from 2 different danish ISPs, one
> >of them has 4 mailservers which keeps on making connections like the one
> below:
> >
> >Jun 9 22:51:07 mpfgw1 smtpd3: 928961467.445214 tcpserver: end 29731
> status 256
> >Jun 9 22:51:07 mpfgw1 smtpd3: 928961467.445660 tcpserver: status: 0/20
> >Jun 9 22:51:07 mpfgw1 smtpd3: 928961467.445905 tcpserver: status: 1/20
> >Jun 9 22:51:07 mpfgw1 smtpd3: 928961467.446159 tcpserver: pid 29734 from
> >195.41.46.139
> >Jun 9 22:51:07 mpfgw1 smtpd3: 928961467.446453 tcpserver: ok 29734
> >mail.relay1.webben.dk:195.41.48.111:25
> fep4.post.tele.dk:195.41.46.139::57953
> >
> >Is it their servers that are broken or is it mine ?
>What exactly do you think is abnormal about that?
The strange thing is that they dont deliver any mail when they connect,
they merely connect repeatedly, up to several times a minute, and when that
happens from 5 different servers at a time it does tie up rather many
connections.
> >Its a bit annoying as they tie up lots of smtp connections which sometimes
> >causes my smtp server to timeout to other "good" connections.
>Nothing in that log snippet demonstrates a client that's hogging an
>SMTP connection. That might be the case, but that snippet doesn't show
>it.
You're right, I have should have pointed out how frequently it did so.
What is strange too is that even now two days after I can see in my
firewall log that it continues with connection attempts in the same rate.
Well anyway I dont have a clue why they do so, I have exchanged mail with
regularly before, and now they connect fine to my relay server, thus I get
the deliveries that way.
