IIS缺少的部分文件包

安装IIS时，会少部分文件 文件包含文件有： EXCH_adsiisex.dll EXCH_aqadmin.dll EXCH_aqueue.dll EXCH_fcachdll.dll EXCH_mail.chm EXCH_mailmsg.dll EXCH_ntfsdrct.h EXCH_ntfsdrct.ini EXCH_ntfsdrv.dll EXCH_regtrace.exe EXCH_rwnh.dll EXCH_scripto.dll EXCH_seo.dll EXCH_seos.dll EXCH_smtpadm.dll EXCH_smtpapi.dll EXCH_smtpctrs.dl