exim won't send

[cyanide]

I'm having an issue with the exim server sending emails.
I can receive email no problem.
Running Fedora Core1 R161

I think I have tried just about every possible fix I can find, such as
- upgrading / downgrading cpanel and exim
- revert to default exim config

the error I'm getting when trying to force a send mail through whm is

Message 1DGKUl-0004z3-Nx is not frozen
delivering 1DGKUl-0004z3-Nx
Connecting to somedomain.com [xx.xx.xxx.xx]:25 ... failed
LOG: MAIN
  somedomain.com [xx.xx.xxx.xx]: Connection refused
LOG: MAIN
  == user@somedomain.com R=lookuphost T=remote_smtp defer (111): Connection refused

This is a server-wide problem affecting all domains...

Can someone throw some ideas my way ?>

Thanks... incidentally, I came across this dns problem in WHM - not sure if it's related though

[linux-image]

check for firewall blocking port 25.

[cyanide]

check for firewall blocking port 25.

thanks for your response. unfortunately, i don't have access to the firewall.
the DC controls it... but I did ask if they can see if it's a firewall / router problem, they said no

hmm... i dunno

[linux-image]

do u have the server root ?

if yes {
do at shell as root
#iptables -F
}
else {
ask the server admin or anyone who has the root to do the same.
}

It must be the firewall running inside the server.

[cyanide]

thanks linux-image, I really appreciate your responses

As it turns out, I turned off the smtp tweak and presto! - email is flowing again.

strange because i have the tweak on in other machines and no problems.

[linux-image]

i was not wrong though turning on smtptweak will add some rules to your iptables. you can check it by checking the iptables by enabling and disabling it.

but it is strange that it works for one and doesnt for another.