Procmail doesn't match the 2nd recipient of TO:-field

Hello,
hours of .... reading  mailing list archive, man page ....
nothing to fix that...

Configuration procmail v3.11pre7/ sendmail 8.89.3 (-bd -q30m -om -t) and
with fetchmail I fetch all mail at POP3 server.

-->snip
# this my .procmailrc
LOGFILE=/backup/procmail.log
VERBOSE=no

:0
* ^To:(_dot_)*someone(_at_)xyz(_dot_)dom
!someone

:0
* ^To:(_dot_)*someoneother(_at_)xyz(_dot_)dom
!someoneother

-->snap

Is there a mail like

To:<someone(_at_)xyz(_dot_)dom>,<someoneother(_at_)xyz(_dot_)dom>

only someone(_at_)xyz(_dot_)dom will got the mail.

What's wrong?

Thanks in advance

Franz