'netstat -planet' would have also shown that there was only a listener on localhost for port 25.<br><br>Glad to hear it all worked out. Just remember, with open smtp comes great responsibility.<br><br>Brad<br><br>
<div class="gmail_quote">On Dec 26, 2007 4:12 PM, Cyber Source <<a href="mailto:peter@thecybersource.com">peter@thecybersource.com</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
incidentally, now that you know what the problem was, the suggestion I<br>made would have exposed it as well.<br><div><div></div><div class="Wj3C7c"><br>Cyber Source wrote:<br>> And on that note, you could use our friend nmap to see what is
<br>> listening on the public IP, "nmap publicip", you could compare this<br>> against "nmap internalip"<br>><br>> Erek Dyskant wrote:<br>>> Robert,<br>>> Your ISP is probably filtering port 25 outside of their network, as
<br>>> ISPs have had so many problems with open relays sucking up all their<br>>> bandwidth. Sadly to run a mail server these days one generally needs to<br>>> have a dedicated server or a business-class connection these days.
<br>>> Call your ISP to ask what ports they filter, and see if there's<br>>> any way<br>>> you can convince them you know what you're doing (if your ISP is<br>>> localnet you may be in luck <grin>)
<br>>> Best of luck.<br>>><br>>> --Erek<br>>><br>>> On Wed, 2007-12-26 at 15:07 -0500, Robert Wolfe wrote:<br>>><br>>>> Good afternoon everyone.<br>>>><br>>>> I run RHEL
5.1 at home using Postfix as my MTA. The problem I am<br>>>> having is that I can telnet to localhost on port 25 and connect all<br>>>> day long; however, no other MTA OUTSIDE my network is able to<br>>>> connect to my Postfix server to receive mail. Port 25 is opened and
<br>>>> forwarded on my router and firewalling has been turned off on the<br>>>> server itself.<br>>>> _______________________________________________<br>>>> nflug mailing list<br>>>>
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