Short Description: Specifies whether to exclude types of document attachments in full text indexes that are not already excluded by default.
You can employ the NOTES.INI variable FT_Index_Attachments=2 to turn off attachment indexing. This overrides any attachment indexing option set up directly in a Notes database or the domain indexer. (FT_Index_Attachments=1 is an unconditional command to index all attachments.)
A value of 1 includes these document attachments in the index, and a value of 2 excludes them. The following types of attachments are excluded from the Domain Index by
default: .au, .cca, .dbd, .dll, .exe, .gif, .img, .jpg, .mp3, .mpg, .mov, .nsf, .ntf,
.p7m, .p7s, .pag, .sys, .tar, .tif, .wav, .wpl, and .zip.
Server and Workstation
Domino 7 Performance Tuning Redbook
Redbook: Domino 7 Performance Tuning