[Linux] Postfix help

Tue, 15 May 2007 13:48:14 -0400

Here is what I would do

>From the Postfix machine 

1)  telnet smtp.comcast.net 25

You should get a 220

2)  type helo test@comcast.net

You should get a 250

3) mail from: test@comcast.net

You should get a 250.  This is if SMTP authentication is not necessary

4)  rcpt to: your email address and it should be one on Comcast i.e.
rcpt to: DWilliams@comcast.net

You should get a 250

5)  type the word data and press enter

You should get End data with <CR><LF>.<CR><LF>

Just type the word test and press enter
on a new line just enter a . and press enter

You should get 250 queued as

Press Ctrl C to see if you get the email. If it fails please tell me
where it failed.

Mike
On Tue, 2007-05-15 at 13:41 -0400, David Williams wrote:
> Mike,
> 
> Yes, the postfix box is on the Comcast network.
> 
> How can I try and do this manually.  I know I need to telnet to port 25, but what do I do after that?
> 
> Regards,
> ____________________________________________
> David Williams
>  
> 
> -----Original Message-----
> From: linux-admin@flux.org [mailto:linux-admin@flux.org] On Behalf Of Mike Harbison
> Sent: Tuesday, May 15, 2007 1:28 PM
> To: linux@flux.org
> Subject: RE: [Linux] Postfix help
> 
> Just a stupid question, but is the Postfix box on the Comcast network?
> I only ask because I know Bellsouth doesn't allow me to relay from any
> other mail server except theirs.  Can you do it manually? Meaning telnet
> or NC into the the SMTP server and send an email?
> 
> Mike
> On Tue, 2007-05-15 at 13:24 -0400, David Williams wrote:
> > Thanks for the advice Mike, but that didn't work either.
> > 
> > Regards,
> > ____________________________________________
> > David Williams
> >  
> > 
> > -----Original Message-----
> > From: linux-admin@flux.org [mailto:linux-admin@flux.org] On Behalf Of Mike Harbison
> > Sent: Tuesday, May 15, 2007 12:42 PM
> > To: linux@flux.org
> > Subject: RE: [Linux] Postfix help
> > 
> > I believe the MX record for comcast is comcast.net  
> > 
> > drop the smtp and try it.
> > 
> > mike.
> > 
> > On Tue, 2007-05-15 at 12:30 -0400, David Williams wrote:
> > > I can try that, but if I ping smtp.comcast.net from the postscript server it comes back just fine.
> > > 
> > > Regards,
> > > ____________________________________________
> > > David Williams
> > >  
> > > -----Original Message-----
> > > From: linux-admin@flux.org [mailto:linux-admin@flux.org] On Behalf Of Mike Harbison
> > > Sent: Tuesday, May 15, 2007 12:20 PM
> > > To: linux@flux.org
> > > Subject: Re: [Linux] Postfix help
> > > 
> > > use the IP address instead of the domain name.
> > > 
> > > Give it a try.
> > > Mike.
> > > On Tue, 2007-05-15 at 12:20 -0400, David Williams wrote:
> > > > Hi all,
> > > > 
> > > >  
> > > > 
> > > > I need help with postfix.  For some reason my outgoing SMTP has
> > > > stopped working.  My account was recently transferred from Adelphia to
> > > > Comcast, along with that came a new SMTP server for Comcast.
> > > > 
> > > >  
> > > > 
> > > > I’ve updated my main.cf file to the following:
> > > > 
> > > >  
> > > > 
> > > > relayhost = smtp.comcast.net
> > > > 
> > > >  
> > > > 
> > > > But, when ever I try and send an email I get the following in the log
> > > > file:
> > > > 
> > > >  
> > > > 
> > > > May 15 11:58:24 dtwconsulting postfix/qmgr[5606]: 07F8845880:
> > > > to=<dwilliams@XXXXXXXXXXX.com>, relay=none, delay=61238,
> > > > delays=61218/20/0/0, dsn=4.4.3, status=deferred (delivery temporarily
> > > > suspended: Host or domain name not found. Name service error for
> > > > name=smtp.comcast.net type=MX: Host not found, try again)
> > > > 
> > > >  
> > > > 
> > > > Can anyone provide any help on this ?
> > > > 
> > > >  
> > > > 
> > > > As some additional info, I setup Outlook to directly use the Comcast
> > > > SMTP server and it went through just fine.  So, why is my smtp server,
> > > > which points to the Comcast SMTP server not working ?  Does Comcast
> > > > have some additional security in place ?   Seems weird to me.  By the
> > > > way, my postfix server is on my local (Comcast) network.
> > > > 
> > > >  
> > > > 
> > > > Any help would be much appreciated.
> > > > 
> > > >  
> > > > 
> > > >  
> > > > 
> > > > Regards,
> > > > 
> > > > ____________________________________________
> > > > 
> > > > David Williams
> > > > 
> > > >  
> > > > 
> > > > 
> > > 
> > > _______________________________________________
> > > Linux mailing list
> > > Linux@flux.org
> > > http://www.flux.org/mailman/listinfo/linux
> > > 
> > > 
> > > No virus found in this incoming message.
> > > Checked by AVG Free Edition. 
> > > Version: 7.5.467 / Virus Database: 269.7.0/804 - Release Date: 5/14/2007 4:46 PM
> > >  
> > > 
> > > _______________________________________________
> > > Linux mailing list
> > > Linux@flux.org
> > > http://www.flux.org/mailman/listinfo/linux
> > 
> > _______________________________________________
> > Linux mailing list
> > Linux@flux.org
> > http://www.flux.org/mailman/listinfo/linux
> > 
> > 
> > No virus found in this incoming message.
> > Checked by AVG Free Edition. 
> > Version: 7.5.467 / Virus Database: 269.7.0/804 - Release Date: 5/14/2007 4:46 PM
> >  
> > 
> > _______________________________________________
> > Linux mailing list
> > Linux@flux.org
> > http://www.flux.org/mailman/listinfo/linux
> 
> _______________________________________________
> Linux mailing list
> Linux@flux.org
> http://www.flux.org/mailman/listinfo/linux
> 
> 
> No virus found in this incoming message.
> Checked by AVG Free Edition. 
> Version: 7.5.467 / Virus Database: 269.7.0/804 - Release Date: 5/14/2007 4:46 PM
>  
> 
> _______________________________________________
> Linux mailing list
> Linux@flux.org
> http://www.flux.org/mailman/listinfo/linux