[Mailman-Users] mail to my list -> mta result: user unknown

Hi, On sending a eMail to my mailing-list I get the following error. (from "tail -F -n 30 /var/log/maillog") May 5 15:44:03 smesrv sendmail[24051]: i45Di3D5024051: <[EMAIL PROTECTED] union.org>... User unknown May 5 15:44:03 smesrv sendmail[24051]: i45Di3D5024051: from=<[EMAIL PROTECTED]>, siz

[Mailman-Users] on mailing to my list: user (=listname) unknown; (sendmail-mailman config error?)

Hi, I have installed - mailman - apache - sendmail Successfully created a list, got a confirmation eMail from list. But on mailing to the list listname = "mylist", I get the following error: <[EMAIL PROTECTED]>: 217.136.223.232_does_not_like_recipient./Remote_host_said:_550_5.1.1_<[EMAIL PROTE