carlopmart wrote: > Ralph Angenendt wrote: >> Are you sure that it is postfix sending that message? This should be >> visible from the *logs* > > Ralph, yes I am sure. I can't find any entry in log file about this > problem. All mails appears as delivered. Postfix sends this message: > > >>> Mail Delivery System <MAILER-DAEMON at domain.com> 05/16/08 1:23 >>> > This is the mail system at host mail.domain.com. > > Your message was successfully delivered to the destination(s) > listed below. If the message was delivered to mailbox you will receive > no further notifications. Otherwise you may still receive > notifications of mail delivery errors from other systems. Looks like the client wants to have a delivery notfication and postfix answers it. This seems to be a client configuration "problem" if it only happens with one client. Cheers, Ralph -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20080521/3d211dc2/attachment-0005.sig>