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Re: Need some help for the last step

From: Olivier Robert (o.roberthome.nl)
Date: Thu May 01 2003 - 17:31:07 CDT

On Thursday 01 May 2003 14:39, Wietse Venema wrote:
> Olivier Robert:
> [ Charset ISO-8859-1 unsupported, converting... ]
>
> > On Thursday 01 May 2003 01:52, Wietse Venema wrote:
> > > Spoken in my best possible Franglais: tcpdump est votre ami.
> > > See the DEBUG_README file.
> >
> > I just got confirmation that port 25 is blocked by my ISP. Thanks Bob.
> >
> > So I configured postfix to listen to port 9025 as found on the list
> > archive, but this does not help as the MTAs (outside my LAN) will try to
> > reach mail.le-caillon.net (my MX record) on port 25.
> >
> > A test on zoneedit.com (my DNS provider):
> > http://www.zoneedit.com/smtp.html?server=mail.le-caillon.net&fromemail=ro
> >bby%40le-caillon.net&toemail=robby%40le-caillon.net&smtptest=Begin+Test
> > shows:
> > ERROR: Error connecting to host mail.le-caillon.net.:25
> >
> > So, 25 is blocked, 9025 is not seen. I guess I can forget my own mail
> > server. Or is there a solution I don't know of?
>
> All solutions would involve a machine whose port 25 is accessible.
>
> Moving the primary MX to another machine (perhaps on a virtual IP
> address)...
>
> Socksifying Postfix smtpd and using a socks proxy server on another
> machine (perhaps on a virtual IP address)...
>
> Using a firewall-level port forwarder on another machine...
>
> Changing network provider.

Yeah, I thougt about that last solution forwarding with the firewall, but just
got another idea: forwarding alias mails through zoneedit services to my ISP
email adress, retrieving mails on the pop account with fetchmail, let
procmail filter and redistribute incoming mail in the users mail boxes. That
way, postfix would only be used internaly the "normal" way and for outgoing
mail to the internet. Not a nice workaround :(
But I don't know yet if after the forward the from field will stay with
somebodyle-caillon.net. Needs testing.

Anyway, thanks a lot to all for your help, I realy appreciate the reactivity
of that mailing list.

Cheers,

PS: Wieste, Postfix is realy a very nice MTA. You must hear that a lot but:
thank you!
--
Olivier Robert