Help Needed: My RHEL5 box suddenly stopped accepting e-mails
zli at phys.hawaii.edu
Wed May 11 06:03:15 UTC 2011
Since you don't have iptables off and your company doesn't have a
firewall, my guess your ISP is doing the filtering. Can we get a
description/picture of your network?
< your computer> <---> ISP <---> to the outside?
> Here's what I get from the remote side:
> PORT STATE SERVICE
> 22/tcp open ssh
> 25/tcp filtered smtp
> I don't know what filters are in place; is there any way to get more
> about the filters?
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