Rejected mail hosts
timw at penninehealthcare.co.uk
Tue Jun 18 13:53:06 BST 2002
> this could be someone outside your network trying to use your mail server
> relay. be sure that your FreeBSD server isn't an open sendmail relay as
> could effectively clog up your server with relay jink mail and/or spam
Pretty sure that they're not rejected because of that. We are currently on
dialup ISDN and are using the BT SMTP server as a smarthost until we get
onto an ISP that offers static IP.
Having said that, the logs from last night say:
Checking for rejected mail hosts:
...and one from the other day:
Unless someone is portscanning IP addresses belonging to BT and finding
addresses with port 25 opened up....? I think I've locked down the server
to not relay messages.
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