Excluding attachments from the Domain Index
The following types of attachments are excluded from the Domain Index by default: .*.ap, *.au, *.bkf, *.bqy, *.cab, *.cca, *.dbd, *.dll, *.exe, *.gif, *.gz, *.img, *.jar, *.jpg, *.lwp, *.m4p, *.m4v, *.MIF, *.mov, *.mp3, *.mp4, *.mpg, *.msi, *.nsf, *.ntf, *.p7m, *.p7s, *.pag, *.pdb, *.pic, *.png, *.pst, *.rar, *.shw, *.sys, *.tar, *.tar, *.tif, *.wav, *.wmf, *.wpl, *.wq1, *.z, *.zip