> I am setting up a firewall for our mail server, and intend to block all ports,
> save those required for sendmail to work , which ones should i allow in.
Only 25. This is the standard SMTP port. If you want to use ssmtp 465 is
required too. If you want that users can access this box via pop3 (110)
and/or imap(143) you should enable these ports too. If you don't want to
allow downloading users' email from outside the 110 and 143 ports are
should only be allowed from inside.
Bye,
Ago
Maintained by the ILUG website team. The aim of Linux.ie is to
support and help commercial and private users of Linux in Ireland. You can
display ILUG news in your own webpages, read backend
information to find out how. Networking services kindly provided by HEAnet, server kindly donated by
Dell. Linux is a trademark of Linus Torvalds,
used with permission. No penguins were harmed in the production or maintenance
of this highly praised website. Looking for the
Indian Linux Users' Group? Try here. If you've read all this and aren't a lawyer: you should be!
