topic Re: Linux Mail Server - cannot send email using outlook in Operating System - Linux

Linux Mail Server - cannot send email using outlook

d_bachelor01 — Tue, 22 Jan 2008 10:16:10 GMT

Hi Guys,

I have a linux mail server running postfix and squirrel. We were able to successfully do the following:

- send emails using webmail (internal and external emails)
- receive emails using webmail (internal and external emails)
- receive emails (in our workstations) using MS Outlook Express that connects to our email server..

Our problems right now is that we cannot send emails (whether internal or external) using MS Outlook Express and the delivery of the emails is quite slow. Any ideas or suggestions how to fix this? Anyone who has encountered the same problem?

Thanks in advance!!

-jef

Re: Linux Mail Server - cannot send email using outlook

Ivan Ferreira — Tue, 22 Jan 2008 11:30:37 GMT

>>> delivery of the emails is quite slow.

This should be a problem with DNS configuration.

>>> we cannot send emails (whether internal or external) using MS Outlook Express

What is the error? Ensure that the firewall is not blocking port 25.

Ensure that postfix is listening on all interfaces:

inet_interfaces = all

Check SELinux.

Re: Linux Mail Server - cannot send email using outlook

Ivan Krastev — Tue, 22 Jan 2008 14:13:06 GMT

Check your sender restrictions in postfix configuration.
Usually it allows only from 127.0.0.1 and you can send via web interface.

regards,
ivan

Re: Linux Mail Server - cannot send email using outlook

d_bachelor01 — Wed, 23 Jan 2008 02:04:45 GMT

Hi Guys!

This is the error message:

Your message did not reach some or all of the intended recipients. Subject: test 5:51 Sent: 1/21/2008 5:52 PM The following recipient(s) could not be reached: 'xxxxxx@yahoo.com' on 1/21/2008 5:52 PM 550 Relay not permitted

Re: Linux Mail Server - cannot send email using outlook

Vitaly Karasik_1 — Wed, 23 Jan 2008 10:15:19 GMT

you should add MS Exchange IP into postfix whitelist.

Re: Linux Mail Server - cannot send email using outlook

Ivan Ferreira — Wed, 23 Jan 2008 12:39:31 GMT

Check the section "TRUST AND RELAY CONTROL" in main.cf:

mynetworks_style
mynetworks
relay_domains

Re: Linux Mail Server - cannot send email using outlook

d_bachelor01 — Fri, 25 Jan 2008 09:41:22 GMT

Hi Guys,
Still having problems in sending using outlook or thunderbird. Please see my attached main for comments.

Re: Linux Mail Server - cannot send email using outlook

Vitaly Karasik_1 — Tue, 29 Jan 2008 16:39:46 GMT

>inet_interfaces = localhost
>inet_interfaces = all

Let's comment the first line and leave only "=all"

BTW, are you able to send email from outlook to the postfix box itself?