Choosing the right hostname

[Kevin O Connor]

this may be a really stupid question but you have got the entries in
/etc/hosts
Regards
Kevin


---------- Original Message -----------
From: "Andrew" <andrew.hodgson at blueyonder.co.uk>
To: <freebsd-users at uk.freebsd.org>
Sent: Thu, 6 Feb 2003 11:47:04 -0000
Subject: Choosing the right hostname

> Hello,
> 
> Forgive me if this sounds hopeless, but I've been having a little trouble
> choosing the right hostname for my firewall/NAT box (4.7-STABLE 
> w/IPFilter). I've been looking around for a solid answer to my 
> problem, but I can't find an exact explanation, so for posterity I 
> thought I should ask the people who know. <cracks knuckles>
> 
> %uname -a
> FreeBSD dhcp-64-50354.missinglink.uk.com 4.7-STABLE FreeBSD 4.7-
> STABLE #0:
> Tue Oct 29 21:53:45 GMT 2002 dicky at dhcp-64-
> 50354.logger.org:/usr/obj/usr/src/sys/FIREWALL  i386
> 
> I have this box setup to protect my Windows box, which I use to make 
> music. I have a hub set up so I can just plug things in (friend's 
> laptops etc.) when I need to. It's worked flawlessly since I set it 
> up in October. However....I wasn't receiving my daily emails, and I 
> found that this was because the domain I'd chosen (logger.org) was 
> already in use, so when sendmail was trying to route mail via 
> localhost.logger.org, it was getting
> 66.216.92.136, not 127.0.0.1. (I tried changing my /etc/resolv.conf 
> so it read 'hosts' before anything else, but this didn't seem to 
> help.) So I changed the domain to missinglink.uk.com (a name I'm in 
> the process of registering). Now I receive my emails, but in the 
> form of error messages from the Mail Delivery Subsystem:
> 
> <quote>
> The original message was received at Thu, 6 Feb 2003 10:02:48 GMT
> from root at localhost
> 
>    ----- The following addresses had permanent fatal errors -----
> root
> 
>     (reason: 553 5.1.8 <root at dhcp-64-50354.missinglink.uk.com>... 
> Domain of sender address root at dhcp-64-50354.missinglink.uk.com does 
> not exist)
>     (expanded from: root)
> 
>    ----- Transcript of session follows -----
> ... while talking to localhost.missinglink.uk.com.:
> >>> MAIL From:<root at dhcp-64-50354.missinglink.uk.com> SIZE=851
> <<< 553 5.1.8 <root at dhcp-64-50354.missinglink.uk.com>... Domain of sender
> address root at dhcp-64-50354.missinglink.uk.com does not exist
> 501 5.6.0 Data format error
> </quote>
> 
> The actual periodic logs are sent as attachments, along with a .dat file
> saying:
> 
> <quote>
> Reporting-MTA: dns; dhcp-64-50354.missinglink.uk.com
> Arrival-Date: Thu, 6 Feb 2003 10:02:48 GMT
> 
> Final-Recipient: RFC822; root at dhcp-64-50354.missinglink.uk.com
> Action: failed
> Status: 5.1.8
> Diagnostic-Code: SMTP; 553 5.1.8 <root at dhcp-64-50354.missinglink.uk.com>...
> Domain of sender address root at dhcp-64-50354.missinglink.uk.com does not
> exist
> Last-Attempt-Date: Thu, 6 Feb 2003 10:02:54 GMT
> </quote>
> 
> So obviously I have a problem with my domain (seeing the line about ''domain
> of sender address...does not exist''), I'm just not too sure about 
> what to do about it. I'll show you my /etc/resolv.conf -
> 
> domain missinglink.uk.com
> hosts
> nameserver 62.30.144.119
> nameserver 62.30.144.120
> 
> If there's any other info I can provide, then let me know. If I just 
> need to read a certain doc, then let me know!
> 
> Thanks in advance,
> 
> Andrew
> 
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------- End of Original Message -------