Error sending to [ random domains ]

Florin Portase portase.florin at medianetork.ro
Wed Dec 28 14:31:25 CET 2011


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On 12/28/2011 01:50 PM, McDonald, Dan wrote:
> 
> 
> 
> On 12/28/11 4:33 AM, "Florin Portase" <portase.florin at medianetork.ro> wrote:
> 
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>> Hello,
>> I have some problems when I send mails to certain domains:
>>
>> - - trouble domain [ cz.ibm.com ]
>>
>> Error::
>>  - Dec 27 13:13:33 postdev postfix/postfix-script[2769]: starting the
>> Postfix mail system
>> Dec 27 13:13:33 postdev postfix/master[2770]: daemon started -- version
>> 2.7.7, configuration /etc/postfix
>> Dec 27 13:13:33 postdev postfix/qmgr[2773]: 336AE85438:
>> from=<florin at postfix0s100.ro>, size=1850, nrcpt=1 (queue active)
> 
> This domain does not appear to exist.  Many companies reject mail from users
> where the return path is not deliverable:
> $ host postfix0s100.ro
> Host postfix0s100.ro not found: 3(NXDOMAIN)
> $ whois postfix0s100.ro
> 
> % Whois Server Version 2.17/2009-12-18 - whois.rotld.ro
> 
> % Rights restricted by copyright.
> % Specifically, this data MAY ONLY be used for Internet operational
> % purposes. It may not be used for targeted advertising or any
> % other purpose.
> 
> % Este INTERZISA folosirea datelor de pe acest server in oricare
> % alt scop decat operarea retelei. In special este INTERZISA
> % folosirea lor in scopuri publicitare.
> 
> % Top Level Domain : ro
> % Maintainance : www.rotld.ro
> 
> % No entries found for the selected source(s).
> 
> 
It's been fixed: it was a problem with "$myhostname" variable in
/etc/postfix/main.cf

The ibm.com mail servers appear to take a strict view of what to have on
the smtp HELO dialog. Many systems let you have most
anything there, but this system seems to want a FQDN.

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