[nflug] RHEL 5.1/PostFix Refusing Remote Connections

Robert Wolfe robertwolfe at localnet.com
Wed Dec 26 15:29:59 EST 2007


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
>   

Actually, if I switch over to my Windoze-based mail server, SMTP traffic 
flows just fine over port 25.

--
Robert Wolfe
Systems Administrator
LocalNet Corp.
CoreComm Internet Services
(517) 664-8924



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