Re: [cobalt-users] Closing port 23

[Bruce Timberlake <bruce@xxxxxxxxxx>]

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> I guess I thought it may be a way of preventing spammers from using
> my mail server to send mail.

Good thinking, but sendmail is set up to disallow relaying by any host 
that you don't specifically authorize in /etc/mail/access with a line 
like:

myfriend.com	RELAY

> I have all the updates, POPb4SMTP, firewall, portsentry,
> chkrootkit, fcheck. Yet it still looks like someone is able to
> connect somehow to spam... I get lots of bounce back messages....
> And how are they able to do the following... And how can I stop
> it???

Check your virtual sites for an insecure formmail.pl or other means of 
sending mail via a web form.

I don't think straight telnet is your problem...

- -- 
Bruce Timberlake

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