Hi, You seem to have a problem with the dns server you’re using… ☺ try a nslookup first to see what server you’re using. Also, with sendmail you can do a sendmail –bv sales@intervideoinc.com to see what’s happening Hope it helps, Duarte ________________________________________ From: otrs-bounces@otrs.org [mailto:otrs-bounces@otrs.org] On Behalf Of Florent PREVOST Sent: quarta-feira, 14 de Setembro de 2005 16:21 To: otrs@otrs.org Subject: [otrs] smtp error   ________________________________________ Hi all,   I'm using OTRS 1.3.2 with fetchmail and sendmail. In the RAW file I've such error message every 5 minutes : fetchmail: SMTP error: 451 4.1.8 Domain of sender address sales@intervideoinc.com does not resolve fetchmail: SMTP error: 451 4.1.8 Domain of sender address auctionguide@spinfix.com does not resolve fetchmail: SMTP error: 451 4.1.8 Domain of sender address rodney@marketingresults.com.au does not resolve fetchmail: SMTP error: 451 4.1.8 Domain of sender address jane@softmall.co.kr does not resolve fetchmail: SMTP error: 451 4.1.8 Domain of sender address sales@intervideoinc.com does not resolve fetchmail: SMTP error: 451 4.1.8 Domain of sender address tjh@cryptsoft.com does not resolve   Can someone tell me what's wrong and how to avoid this ?   Thx a lot Florent                                ________________________________________ 49, rue de la Vanne - 92120 Montrouge - France tél : +33 (0) 1 47 35 72 73   fax : +33 (0) 1 47 35 07 09 www.editions-profil.fr ________________________________________ Ce mail a été analysé par BitDefender et ne contient aucun virus connu. Vous pouvez télécharger une version d'évaluation de BitDefender, analyser votre PC à distance et avoir de nombreuses informations sur les virus sur le site www.bitdefender.fr