Failure to resolve an address indicates that either the domain name does not exist or a DNS configuration issue. Error messages in original message support this... Have you checked the server mail logs, attempted to resolve the addresses (i.e with PING), and checked the DNS entries on an alternative DNS server. Fetchmail collects and passes mail to the MDA which then processes the mail, the MDA logs may contain more information. If the domain name does not resolve, but a record exists in the DNS it is usually a DNS server issue, if no record exists for a domain but the domain name is registered it is a DNS registration issue, otherwise this is a perfectly normal response if you have configured your MDA not to accept mail from unresolvable domains. BTW unresolvable sender address domains are good indicators for spam or possibly SMTP hacking attempts. This is NOT an OTRS problem but a more fundamental mail server and DNS configuration issue. On Thu, 2005-09-15 at 13:13 +0200, Florent PREVOST wrote:

Hi all,

Thx to Duarte for his help but it is not a DNS problem.

These error messages only appear for these emails. Dozen and dozen of others are ok.

The problem is also the fact that that seems to be a message from fetchmail. I use fetchmail only to get emails from another server to give them to OTRS.

Anyone has another idea ?

Thx Florent

...

-----Message d'origine----- De : otrs-bounces@otrs.org [mailto:otrs-bounces@otrs.org]De la part de otrs-request@otrs.org Envoye : jeudi 15 septembre 2005 07:48 A : otrs@otrs.org Objet : otrs Digest, Vol 26, Issue 19

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1. RE: smtp error (Duarte Cordeiro) 2. Sub-Queue in OTRS 1.3.2 (Jason Joines) 3. RE: Sub-Queue in OTRS 1.3.2 (West, Bradley G.) 4. Re: Sub-Queue in OTRS 1.3.2 (Jason Joines) 5. remove a queue, remove an e-mail address? (Pim Rupert (Lemonbit Internet)) 6. Bulk-Action no longer works with popup disabled. (John Hennessy) 7. Re: Bulk-Action no longer works with popup disabled. (John Hennessy)

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Message: 1 Date: Wed, 14 Sep 2005 16:37:20 +0100 From: "Duarte Cordeiro" Subject: RE: [otrs] smtp error To: "User questions and discussions about OTRS.org" Message-ID: <20050914163720459.00000002972@helpdesk1c04> Content-Type: text/plain; charset=utf-8

Hi,

You seem to have a problem with the dns server youb

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