a mail-client is usually configured to use port 587 (submissionn) and not 25 (smtp) becuase 25 is for server-to-server communication and blocking port 25 outgoing from home-users is a good weapon to block their spam-bots
Am 30.07.2012 01:22, schrieb Engin qwert: > My router don't even have any configuration interface it is hard to be > blocked from router. In this situation the > upstream provider may be. But I want to repeat again that. Before making a > clean install, I could send mail from > outside the server. For example. > > Client(Icedove program pointing to server) > Mail Server > The mail sent. > > but ; > > Mail Server (Icedove program pointing to itself) > Cannot send mail (the > error message were "no route to the host") > > ------------------------------------------------------------------------------------------------------------------- > Date: Mon, 30 Jul 2012 00:13:55 +0100 > From: p...@netpresto.co.uk > To: postfix-users@postfix.org > Subject: Re: 回覆： Re: no route to host > > In my opinion TCP port 25 (smtp) is being blocked by either > your router or the upstream provider
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