553 sorry, your envelope sender domain must exist (#5.7.1)

[Robert Canary]

Yes it can, but the headers will use the host name 
(FQDN) of the actual machine it sits on.  It has 
to or else the receiveing server will not know 
where to repond.

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 at ohiocounty.net>
>> Reply-To: General Red Hat Linux discussion list <redhat-list at redhat.com>
>> To: Dennis James <denniswj at iinet.net.au>,General Red Hat Linux 
>> discussion list <redhat-list at redhat.com>
>> 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 at mynet.net.au.
>>>
>>> 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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> 
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