Very Computer

I have a working networked Linux box at home. Setting up networking on my
cable modem was no problem, however getting SMTP to work has been a total
mystery.

I have the postfix daemon running, and a list of host names for which I
will allow relaying. I can confirm that port 25 is open, but when I telnet
to port 25 to test a smtp transaction, the server never responds. The
connection begins, but the header that is supposed to be transmitted by
the server never gets sent. And yes, I am connecting from one of the
allowed names.

I have no problem connecting to any of my other open ports (80, 21, etc..)

I have tried updating the postfix daemon, as well as the kernel and a host
of other libs that work in concert with smtp services, but to no avail.

Is there any guidance or perhaps a "How-To" out there that can explain how
to properly setup smtp services on a linux box?

Kind regards,
  Warren C.

Hi Warren,

Quote:> I have a working networked Linux box at home. Setting up networking on my
> cable modem was no problem, however getting SMTP to work has been a total
> mystery.

> I have the postfix daemon running, and a list of host names for which I
> will allow relaying. I can confirm that port 25 is open, but when I telnet
> to port 25 to test a smtp transaction, the server never responds. The
> connection begins, but the header that is supposed to be transmitted by
> the server never gets sent. And yes, I am connecting from one of the
> allowed names.

As a test, put the IP address and hostname that you are connecting from into
the /etc/hosts file on the machine which is running postfix.  If the
connection to the daemon speeds up when connecting, then you know it is
hostname based, if it doesn't then it is something else.

See ya

Dean Thompson

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