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Question : sendmail newbie - utterly lost !! -
hi
i'm seriously struggling with setting up a network at home - so much for ambition !!
i have a fedora core 5 box acting as a PDC with a RAID 1 array and am using mdadm to monitor the array
i need to send mdadm alerts via email but can't get it to work ............ here's the setup
PDC
static IP: 192.168.0.80
hostname: boomslang
i have a Smoothwall box (internal IP 192.168.0.1) which does DHCP for the rest of the network
to test the sendmail (which mdadm uses for the alerts) i use
echo "testing neill mail" | mail -s "testing" neill
(neill is a user on the PDC)
in /etc/aliases i have the entry
neill:
[email protected]
sysadmin is set up as a mailbox at my ISP and i can send and receive fine from that mailbox (using t'bird from an XP machine)
when i run the sendmail test as root ithe PDC i get a 550 error as below: (email addresses edited)
**************************
**********
**********
**********
*******
The original message was received at Tue, 16 May 2006 23:35:20 +0100
from localhost.localdomain [127.0.0.1]
----- The following addresses had permanent fatal errors -----
[email protected]
(reason: 550-Verification failed for
n>)
(expanded from:
in>)
----- Transcript of session follows -----
... while talking to mx.core.plus.net.:
>>>>>> DATA
<<< 550-Verification failed for
n>
<<< 550-REJECTED: Cannot route message
<<< 550 Sender verify failed
550 5.1.1
[email protected]
... User unknown
<<< 503 valid RCPT command must precede DATA
Reporting-MTA: dns; localhost.localdomain
Received-From-MTA: DNS; localhost.localdomain
Arrival-Date: Tue, 16 May 2006 23:35:20 +0100
Final-Recipient: RFC822;
[email protected]
n
X-Actual-Recipient: RFC822;
[email protected]
Action: failed
Status: 5.1.1
Remote-MTA: DNS; mx.core.plus.net
Diagnostic-Code: SMTP; 550-Verification failed for
n>
Last-Attempt-Date: Tue, 16 May 2006 23:35:20 +0100
Subject:
testing
From:
root
n>
Date:
Tue, 16 May 2006 23:35:20 +0100
To:
[email protected]
n
testing neill mail
**************************
**********
**********
**********
**********
**********
i get a similar error if i run the mdadm test command
mdadm --follow --scan --daemonise --delay=10 --test
this means zip to me !! ;(
i'm clearly missing something obvious but i've read some sendmail FAQs, docs and the like and am now simply more confused than ever
anyone able to help me out please ?
neill
Answer : sendmail newbie - utterly lost !! -
The remote host refuses to accept messages from sender without internet reachable domain [localhost.localdomain]. The check has been widely added as one of anti-spam prevention measures.
Make your hosts know and report its proper internet name.
http://www.sendmail.org/m4
/whoami.ht
ml
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