[BlueOnyx:10406] Re: incorrect HELO

[Gerald Waugh]

On 04/30/2012 07:07 AM, Colin Jack wrote:
>> On 04/30/2012 05:02 AM, Colin Jack wrote:
>>> We recently updated one of our servers (VPS on Aventurin{e}) using yum and
>> now have been listed on CBL because "This IP address is HELO'ing as
>> "localhost.localdomain" which violates the relevant standards (specifically:
>> RFC5321)"
>>>
>>> Looking in my hosts file I have
>>>
>>> # /etc/hosts
>>> # Auto-generated file.  Keep your customizations at the bottom of this file.
>>> 127.0.0.1        localhost localhost.localdomain
>>> 192.168.2.6             server1.localdomain  server1-venet0:0.localdomain
>> server1-venet0:0
>>> #END of auto-generated code.  Customize beneath this line.
>>> 127.0.0.1 localhost.localdomain localhost server1.fast-mail.net #
>>> Auto-generated hostname. Please do not remove this comment.
>>> 192.168.2.6 server1.<CORRECTDOMAIN> server1-venet0:0.localdomain
>>> server1.localdomain server1-venet0:0.<CORRECTDOMAIN>  server1 server1-
>> venet0:0 ### Begin - Nuonce hosts Fix
>>> 127.0.0.1       server1.<CORRECTDOMAIN>
>>> 192.168.2.6     server1.<CORRECTDOMAIN>
>>> ###  End  - Nuonce hosts Fix
>>> [root at server1 etc]#
>>>
>>> I amended the details as follows, but obviously these are auto-generated and
>> it will 'break' again. Where else can I fix this permanently?
>>>
>>> # /etc/hosts
>>> # Auto-generated file.  Keep your customizations at the bottom of this file.
>>> 127.0.0.1        server1 server1.<CORRECTDOMAIN>
>>> 192.168.2.6             server1.<CORRECTDOMAIN> server1-
>> venet0:0.localdomain server1-venet0:0
>>> #END of auto-generated code.  Customize beneath this line.
>>>
>>
>> FYI the heder in this email
>>
>> from localhost.localdomain (localhost [127.0.0.1]) by lists.blueonyx.it
>> (8.13.8/8.13.8) with ESMTP id q3UA2seA009436; Mon, 30 Apr 2012 06:03:01
>> -0400
>>
>> Unless you modified /etc/hosts after.
>>
>> What does executing ' hostname ' yield/
>>
>> --
>> Gerald
> 
> Now that header is interesting - because my email came from an Exchange 2010 server - the server in question above is in a datacentre and provides SMTP relay services for our clients. It has nothing to do with our internal email ;)
> 
> On the server in question, 'hostname' resolves correctly. The problem is that the sendmail HELO doesn't.
> 
> Colin
> 
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> 


maybe check /etc/mail/sendmail.mc
specifically masquerade features, mine looks like;

dnl # The following example makes mail from this host and any additional
dnl # specified domains appear to be sent from mydomain.com
dnl #
MASQUERADE_AS(`')
dnl #
dnl # masquerade not just the headers, but the envelope as well
dnl #
dnl FEATURE(masquerade_envelope)dnl
dnl #
dnl # masquerade not just @mydomainalias.com, but @*.mydomainalias.com
as well
dnl #
dnl FEATURE(masquerade_entire_domain)dnl
dnl #



-- 
Gerald