I'm trying to set up a home mail server so it will be able to recieve mail from anyone out there, to be able to send only from my box, without accepting other connections.
I'm using sendmail 8.13.8 on my slackware box. I have port 25 opened, and it seems 587 is opened too.
All I modified was /etc/mail/access, adding the line "* OK", which from what I understand, should recieve mail from anyone, but not relay it.
It seems ok, it can send and recieve mail.
I asked a friend to try to telnet on those ports, and it disconnects him, so I am assuming my configuration is ok.
I'm currently installing clamav and spamassasin.

What else can I do to secure it or test it?
Does sendmail have a log somewhere? And, in Suse, I had a /var/log/firewall log with all the dropped packages. Is there or can I have something like this in Slackware?

I'm still a newbie at this, so any info/suggestion is welcomed. Thanks for reading.

try this http://www.abuse.net/relay.html

Thank you, tried the anonymous test.

So far so good, I guess. Anything else I should be doing?