With sendmail version < 8.12, all is rigth only using IPC in the mailer definition in sendmail.cf while Cyrus deliver does not work. Now, after sendmail 8.12, IPC is not supported so I can't upgrade sendmail on my Cyrus server.
Best regards Siur K. --------------------------------------- __O Stefano Coatti - MAP _-\<,_ Inferentia S.p.A. (_)/ (_) Postmaster