mono at centrum dot sk wrote:
> but i don`t have any SMTP server on network. Hmm, if i make rule
> which deny SMTP, then anyone would be able to send email from theirs
> Outlook and other mail clients??
Actually, it would prevent EVERYBODY from sending email. But, this
would be temporary - only enable the rule while you are trying to
pinpoint what IP is ending out SMTP traffic. You would need to tell
all of your users that sending email is restricted. Or do it while
outbound mail would be low - while everyone is at lunch or after
This will only help if you really have a machine spewing SPAM. If your
IP is listed for other reasons (see Chris Bagnall's response) this
will only restrict sending email.
James W. McKeand