On Sat, Jan 06, 2001 at 06:35:05AM +0100, Roland Reichmann wrote: > In the Header of the message is following line: > > X-Authentication-Warning: ns.best4y.at: mailman set sender to > test-admin at ns.best4y.at using -f You should investigate making your mailman user a "trusted user" of your MTA (sendmail, I'd guess).