This is Netmilsmoms, Husband:
OK, so I replace my Linksys firewall with the Dansguardian Linux firewall. Squid is a web cache package for Apache, I don’t quite understand how installing Squid has anything at all to do with SMTP.
Didn’t you have to register an MX record to enable email on your Dansguardian Linux box or do you have it as a forwarder / SPAM filter only?
Thanks,
To get an idea how to set squid up to handle email clients in a local network, have a look at this.
http://www.unix.com/ip-networking/29730-squid-email-client.html
Enjoy!
:)