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Old 07-31-2008, 02:32 PM   #1
elvisious
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Question Postfix: cant send email from my Windows pc using my postfix mailserver


Hi,

Ik have installed a mailserver with: Postfix, Dovecot and fetchmail.

Most of all works fine:

I can fetch my mail with fetchmail on my server.
I can send mail with Postfix on my server.
I can get my mail with Outlook on my Windows system from my server.

The only that doesn't work is that I can not send mail from my Windows system using my mail server...



When I do a port scan on my mail server all nessesary port are open (110, 143) but port 25 is closed. Isn't this the port that Outlook uses to send mail?

( When I stop Postfix and I start Sendmail I have the same problem )

Can somebody help me?

Greetz
Dion
 
Old 07-31-2008, 05:42 PM   #2
elvisious
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I now have installed Squirrelmail too and its working OK. Squirrelmail is installed on the mailserver.
So the problem is still the same: How can I use my mailserver from my Windows machine to send email?
 
Old 07-31-2008, 06:14 PM   #3
billymayday
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Have a look in the maillogs for what happens. I'll bet it's the mynetworks section in main.cf, but post the output of "postconf -n"
 
Old 08-01-2008, 02:10 AM   #4
Mr. C.
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This sounds like the mail server is listening only on the loopback interface.

What is the output of

netstat -aln --tcp

or iptables is blocking the port.

iptables -L

Last edited by Mr. C.; 08-01-2008 at 02:11 AM.
 
Old 08-01-2008, 02:40 PM   #5
elvisious
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Hi

Thanks! You both where right:

I put this line in /etc/postfix/main.cf:

Code:
mynetworks = 192.168.100.0/24, 127.0.0.0/8
And then I gave the command:

Code:
#postfix reload
Nothing happens. So I read my /var/log/maillog:
Code:
postfix/master[20133]: warning: service smtp: ignoring inet_interfaces change
postfix/master[20133]: warning: to change inet_interfaces, stop and start Postfix
And then I did this:

Code:
#postfix stop
#postfix start

Last edited by elvisious; 08-01-2008 at 02:50 PM.
 
Old 08-01-2008, 03:03 PM   #6
Mr. C.
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Setting mynetworks does not change inet_interfaces. In fact, the log message indicates you also changed inet_interfaces. This was the variable change that was required.

mynetworks tells postfix what mail clients to consider as local and hence trusted.
 
Old 08-01-2008, 03:09 PM   #7
elvisious
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Yes. You are right again. I did some things and I wanted to put the things I did in this forum and then I forgot the inet_interfaces thing.

I did this in the main.cf:
Code:
inet_interfaces = all
 
Old 08-01-2008, 04:57 PM   #8
billymayday
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So is it working now?
 
Old 08-01-2008, 08:01 PM   #9
elvisious
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Yes

 
  


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