[TriLUG] e-mail configuration question

[gregbrown at mindspring.com]

All:

I am attempting to use my Linux lab machine as my primary source for e-mail while at work.  E-mail works great as long as it is sent between users on the same machine (i.e. mail -s "test" username) but when I attempt to e-mail my account from outside of my machine (i.e. sent to username at vtcdev.gc.lucent.com) the mail never arrives.  This happens when I send e-mail from outside of Lucent or from the Lucent network (just from a different machine on the network).

I am using Kmail as my client (along with xbiff).  I have Kmail configured to look for e-mail in /var/spool/mail/user and it sees e-mail here as long as it was generated from the same machine.

So now I'm left with two possibilities in this scenario:

1. there is a firewall somewhere on the LAN which is intercepting my e-mails destined for vtcdev and is dropping them

2. something isn't configured correctly on vtcdev to allow for e-mail to be recieved from machines other than itself

Any suggestions?  I see port 25 defined in /etc/services and it appear my IP Chains should be allowing incoming mail (ipchains file at the end of this e-mail).

Greg


 Firewall configuration written by lokkit
# Manual customization of this file is not recommended.
# Note: ifup-post will punch the current nameservers through the
#       firewall; such entries will *not* be listed here.
:input ACCEPT
:forward ACCEPT
:output ACCEPT
-A input -s 0/0 -d 0/0 25 -p tcp -y -j ACCEPT
-A input -s 0/0 -d 0/0 80 -p tcp -y -j ACCEPT
-A input -s 0/0 -d 0/0 21 -p tcp -y -j ACCEPT
-A input -s 0/0 -d 0/0 22 -p tcp -y -j ACCEPT
-A input -s 0/0 -d 0/0 23 -p tcp -y -j ACCEPT
-A input -s 0/0 67:68 -d 0/0 67:68 -p udp -i eth0 -j ACCEPT
-A input -s 0/0 67:68 -d 0/0 67:68 -p udp -i eth1 -j ACCEPT
-A input -s 0/0 -d 0/0 -i lo -j ACCEPT
-A input -s 0/0 -d 0/0 -i eth0 -j ACCEPT
-A input -p tcp -s 0/0 -d 0/0 0:1023 -y -j REJECT
-A input -p tcp -s 0/0 -d 0/0 2049 -y -j REJECT
-A input -p udp -s 0/0 -d 0/0 0:1023 -j REJECT
-A input -p udp -s 0/0 -d 0/0 2049 -j REJECT
-A input -p tcp -s 0/0 -d 0/0 6000:6009 -y -j REJECT
-A input -p tcp -s 0/0 -d 0/0 7100 -y -j REJECT