Why is this hostname failing?

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Why is this hostname failing?

John Baker-5
Hi,

I user reported mail not getting to him from somebody and I found this
in the log:

  NOQUEUE: reject: RCPT from bmmail.cwf.org[216.54.2.34]: 504
<doorway3>: Helo command rejected: need fully-qualified hostname;
from=<[hidden email]> to=<[hidden email]> proto=SMTP
helo=<doorway3>

bmmail.cwf.org returns a valid result from a dns check. What am I
missing here?
--
John Baker
Network Systems Administrator
Marlboro College
Phone: 451-7551 off campus; 551 on campus
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Re: Why is this hostname failing?

Patrick Ben Koetter
* John Baker <[hidden email]>:

> Hi,
>
> I user reported mail not getting to him from somebody and I found this  
> in the log:
>
>  NOQUEUE: reject: RCPT from bmmail.cwf.org[216.54.2.34]: 504 <doorway3>:
> Helo command rejected: need fully-qualified hostname;  
> from=<[hidden email]> to=<[hidden email]> proto=SMTP  
> helo=<doorway3>
>
> bmmail.cwf.org returns a valid result from a dns check. What am I  
> missing here?

The client sends only "doorway3" as hostname (HELO doorway3...).
Your server (?) rejects that.

p@rick



> --
> John Baker
> Network Systems Administrator
> Marlboro College
> Phone: 451-7551 off campus; 551 on campus

--
The Book of Postfix
<http://www.postfix-book.com>
saslfinger (debugging SMTP AUTH):
<http://postfix.state-of-mind.de/patrick.koetter/saslfinger/>
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Re: Why is this hostname failing?

Charles Marcus
In reply to this post by John Baker-5
On 8/20/2008, John Baker ([hidden email]) wrote:
> bmmail.cwf.org returns a valid result from a dns check. What am I
> missing here?

This: helo=<doorway3>

helo hostnames should be FQDN's...

--

Best regards,

Charles
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Re: Why is this hostname failing?

d.hill
In reply to this post by John Baker-5
On Wed, 20 Aug 2008, John Baker wrote:

> Hi,
>
> I user reported mail not getting to him from somebody and I found this in the
> log:
>
> NOQUEUE: reject: RCPT from bmmail.cwf.org[216.54.2.34]: 504 <doorway3>: Helo
> command rejected: need fully-qualified hostname; from=<[hidden email]>
> to=<[hidden email]> proto=SMTP helo=<doorway3>
>
> bmmail.cwf.org returns a valid result from a dns check. What am I missing
> here?

As the log states "Helo command rejected: need fully-qualified hostname".
The server helo'd with just 'doorway3'. That in itself is not a fully
qualified hostname.

-d
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Re: Why is this hostname failing?

Graham Leggett
In reply to this post by John Baker-5
John Baker wrote:

> I user reported mail not getting to him from somebody and I found this
> in the log:
>
>  NOQUEUE: reject: RCPT from bmmail.cwf.org[216.54.2.34]: 504 <doorway3>:
> Helo command rejected: need fully-qualified hostname;
> from=<[hidden email]> to=<[hidden email]> proto=SMTP
> helo=<doorway3>
        ^^^^^^^^^^
>
> bmmail.cwf.org returns a valid result from a dns check. What am I
> missing here?

It looks like the sender of the message is trying to send their mail
directly from their badly configured mail client, or from a badly
configured MTA, which is identifying itself as being called "doorway3".

Either way, the sender's setup is broken, and your system is quite
rightly rejecting the mail (as is everybody else's).

Regards,
Graham
--

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