Usually changing this attribute only helps when there multiple IPs assigned to a NIC. With each IP having a FQDN, changing this value tells the MTA to listen and act on a specific IP(FQDN). However, it will only work if it can see itself in that IP.
It will also map the hostname of the machine and domain name of the machine. Make sure they build together a FQDN.
Ben Sewell wrote:
Hi, can this be replaced by a hostname?
Thanks, Ben
From: Robert Canary <phantom@xxxxxxxxxxxxxx>
Reply-To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx>
To: Dennis James <denniswj@xxxxxxxxxxxx>,General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx>
Subject: Re: 553 sorry, your envelope sender domain must exist (#5.7.1)
Date: Sun, 27 Jun 2004 12:39:58 -0500
Dennis,
Your defualt setting in the sendmail.cf file prevents sendmial from recieving mail accept on the local machine (127.0.0.1)
DAEMON OPTIONS('Port=smtp,Addr=127.0.0.1,Name=mta')dnl
This should be all on one line. Your email may have truncated it.
The machine which you are sending mail must have a valid FQDN. With junk mail running rampid these days, most properly adminstered MTAs will reject mail from a host which dosen't reverse resolve or dosen't have a proper host lookup. localhost.localdomain is a dummy hostname used for looping on a single machine (or sometimes on a closed network).
Dennis James wrote:
Some time ago I was trying to send root mail to an isp smtp mail.m.mynet.net.au. I have succeeded in sending the email when doing a test, but I get the following error.
553 sorry, your envelope sender domain must exist (#5.7.1)
The domain of the machine is localhost.localdomain.
I want only to be able to send email (to my email address and a work address) logs to myname@xxxxxxxxxxxxx
I do not want to receive mail only send root mail and log files.
Is there a simple way of doing this.
I have had assistance previously which helped a lot.
Regards
Dennis @ Scone
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