[nflug] RHEL 5.1/PostFix Refusing Remote Connections

[Cyber Source]

incidentally, now that you know what the problem was, the suggestion I 
made would have exposed it as well.

Cyber Source wrote:
> And on that note, you could use our friend nmap to see what is 
> listening on the public IP, "nmap publicip", you could compare this 
> against "nmap internalip"
>
> Erek Dyskant wrote:
>> Robert,
>>     Your ISP is probably filtering port 25 outside of their network, as
>> ISPs have had so many problems with open relays sucking up all their
>> bandwidth.  Sadly to run a mail server these days one generally needs to
>> have a dedicated server or a business-class connection these days.
>>     Call your ISP to ask what ports they filter, and see if there's 
>> any way
>> you can convince them you know what you're doing (if your ISP is
>> localnet you may be in luck <grin>)
>>     Best of luck.
>>
>> --Erek
>>
>> On Wed, 2007-12-26 at 15:07 -0500, Robert Wolfe wrote:
>>  
>>> Good afternoon everyone.
>>>
>>> I run RHEL 5.1 at home using Postfix as my MTA.  The problem I am 
>>> having is that I can telnet to localhost on port 25 and connect all 
>>> day long; however, no other MTA OUTSIDE my network is able to 
>>> connect to my Postfix server to receive mail.  Port 25 is opened and 
>>> forwarded on my router and firewalling has been turned off on the 
>>> server itself.
>>> _______________________________________________
>>> nflug mailing list
>>> nflug at nflug.org
>>> http://www.nflug.org/mailman/listinfo/nflug
>>>     
>>
>> _______________________________________________
>> nflug mailing list
>> nflug at nflug.org
>> http://www.nflug.org/mailman/listinfo/nflug
>>
>>   
> _______________________________________________
> nflug mailing list
> nflug at nflug.org
> http://www.nflug.org/mailman/listinfo/nflug
>