Postfix smtp wont let me send mail out of outlook; everything works fine with squirrlemail ...

Posted on 2009-04-18
Last Modified: 2013-11-30
i have outlook set up as IMAP server; and for my servers I have as in the dns server; I have tried to send mail with smtp, smtpd,, etc.; everthing works fine if I use simply squirrelmail ( I have to set up outlook for others) ; outlook recieves mail fine but wont send out and gives me this same error message:

The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was ''. Subject 'Re: ', Account: '', Server: '', Protocol: SMTP, Server Response: '554 5.7.1 <>: Relay access denied', Port: 25, Secure(SSL): No, Server Error: 554, Error Number: 0x800CCC79
Question by:solunatec
    LVL 19

    Accepted Solution

    The IP address of your computer(s) running outlook must be configured in postfix.
    For details see

    Author Comment

    ...also changed port to 587;

    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Top 6 Sources for Identifying Threat Actor TTPs

    Understanding your enemy is essential. These six sources will help you identify the most popular threat actor tactics, techniques, and procedures (TTPs).

    Why Shell Scripting? Shell scripting is a powerful method of accessing UNIX systems and it is very flexible. Shell scripts are required when we want to execute a sequence of commands in Unix flavored operating systems. “Shell” is the command line i…
    Every server (virtual or physical) needs a console: and the console can be provided through hardware directly connected, software for remote connections, local connections, through a KVM, etc. This document explains the different types of consol…
    In this video we show how to create an Address List in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Organization >> Ad…
    Video by: Phil
    This video goes over how to configure and start a jail in FreeBSD.  This video is meant to supplement the article included with this course.

    759 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    8 Experts available now in Live!

    Get 1:1 Help Now