Hi Steffen Dettmer,
Can you please explain that? I happily block tcp/25 on all servers except mailservers.
that is ok. I ment that you have blocked it on the central firewall.
dial-up. If you have a mailserver in your DMZ you can disable pop3 to outside.
And if I have a POP3 server in the LAN I cannot block?!
I don't think so or we talk about different. I wrote to block to outside and not to your internal LAN. If you have the POP3-Server in your DMZ than you enable it to use from inside, but block it to outside. The only reason to give the using of the pop3-server free to use from outside is than your company have employees that have to do with customers and make a lots of visits by the customers and need to read everytime the companymails. Regards, Ruprecht ---------------------------------- Ruprecht Helms IT-Service und Softwareentwicklung Tel/Fax.: +49[0]7621 16 99 16 Homepage: http://www.rheyn.de email: info@rheyn.de ----------------------------------