Blocking attachments ending in "\.com$", but then not

[Ralf Hildebrandt via amavis-users]

>From a banned mail:

X-Amavis-Alert: BANNED, message contains text/html,.asc,cid: CE5AA0D295C27C4EB1C00217FC096FED at sanofi.com

Is it somehow possible to block .*\.com attachments, while allowing
the stuff blockend above through?

-- 
Ralf Hildebrandt                   Charite Universitätsmedizin Berlin
ralf.hildebrandt at charite.de        Campus Benjamin Franklin
http://www.charite.de              Hindenburgdamm 30, 12203 Berlin
Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155