[Linux] Postfix help

Tue, 15 May 2007 13:26:13 -0400

A little lost on this one.

The only thing that my resolv.conf file has is the ip address of my =
router.  I've never touched that file so that must have been done by the =
system.

Regards,
____________________________________________
David Williams
=20

-----Original Message-----
From: linux-admin@flux.org [mailto:linux-admin@flux.org] On Behalf Of =
Michael Marschall
Sent: Tuesday, May 15, 2007 1:05 PM
To: linux@flux.org
Subject: RE: [Linux] Postfix help

Hmm my guess is that his 'relayhost' is not the only thing to change if =
he has
gone from one provider to another. If his mailer cannot resolve the =
following:

gold $ host smtp.comcast.net=20
smtp.comcast.net has address 216.148.227.147
smtp.comcast.net has address 63.240.77.77
smtp.comcast.net has address 204.127.192.17
smtp.comcast.net has address 204.127.200.17
smtp.comcast.net has address 204.127.225.17
smtp.comcast.net has address 206.18.177.17

then my guess is that his /etc/resolv.conf needs to update as well to =
point to
his new provider's name servers :^). Also none of the below hostnames =
has an ip
that matches the above ip's:

gold $ host -t mx comcast.net=20
comcast.net mail is handled by 5 gateway-r.comcast.net.
comcast.net mail is handled by 5 gateway-s.comcast.net.
comcast.net mail is handled by 5 gateway-a.comcast.net.

Check resolv.conf and make sure the values there are set to comcast's
nameservers.

Mike=20

--- Mike Harbison <Mharbison@QQonline.com> wrote:

> I believe the MX record for comcast is comcast.net =20
>=20
> drop the smtp and try it.
>=20
> mike.
>=20
> 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.
> >=20
> > Regards,
> > ____________________________________________
> > David Williams
> > =20
> > -----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
> >=20
> > use the IP address instead of the domain name.
> >=20
> > Give it a try.
> > Mike.
> > On Tue, 2007-05-15 at 12:20 -0400, David Williams wrote:
> > > Hi all,
> > >=20
> > > =20
> > >=20
> > > 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.
> > >=20
> > > =20
> > >=20
> > > I=C3=A2=E2=82=AC=E2=84=A2ve updated my main.cf file to the =
following:
> > >=20
> > > =20
> > >=20
> > > relayhost =3D smtp.comcast.net
> > >=20
> > > =20
> > >=20
> > > But, when ever I try and send an email I get the following in the =
log
> > > file:
> > >=20
> > > =20
> > >=20
> > > May 15 11:58:24 dtwconsulting postfix/qmgr[5606]: 07F8845880:
> > > to=3D<dwilliams@XXXXXXXXXXX.com>, relay=3Dnone, delay=3D61238,
> > > delays=3D61218/20/0/0, dsn=3D4.4.3, status=3Ddeferred (delivery =
temporarily
> > > suspended: Host or domain name not found. Name service error for
> > > name=3Dsmtp.comcast.net type=3DMX: Host not found, try again)
> > >=20
> > > =20
> > >=20
> > > Can anyone provide any help on this ?
> > >=20
> > > =20
> > >=20
> > > 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.
> > >=20
> > > =20
> > >=20
> > > Any help would be much appreciated.
> > >=20
> > > =20
> > >=20
> > > =20
> > >=20
> > > Regards,
> > >=20
> > > ____________________________________________
> > >=20
> > > David Williams
> > >=20
> > > =20
> > >=20
> > >=20
> >=20
> > _______________________________________________
> > Linux mailing list
> > Linux@flux.org
> > http://www.flux.org/mailman/listinfo/linux
> >=20
> >=20
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.=20
> > Version: 7.5.467 / Virus Database: 269.7.0/804 - Release Date: =
5/14/2007
> 4:46 PM
> > =20
> >=20
> > _______________________________________________
> > Linux mailing list
> > Linux@flux.org
> > http://www.flux.org/mailman/listinfo/linux
>=20
> _______________________________________________
> Linux mailing list
> Linux@flux.org
> http://www.flux.org/mailman/listinfo/linux
>=20

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_______________________________________________
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.=20
Version: 7.5.467 / Virus Database: 269.7.0/804 - Release Date: 5/14/2007 =
4:46 PM
=20