The original message was received at Tue, 22 May 2007 12:05:51 +0200 from mx1.psi.neteu.net [154.15.246.42] ----- The following addresses had permanent fatal errors ----- <infos-lro@ketb.com> (reason: 550 Invalid recipient/sender mailing address) ----- Transcript of session follows ----- ... while talking to mail.ketb.com.:

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DATA <<< 550 Invalid recipient/sender mailing address 554 5.0.0 Service unavailable