some excel files which i send as attachments are not received by .

[sjb]

When i send excel attachments they do not always appear in the e-mail. i
check my sent items and the attachments are there. i use Office 2000 and my
e-mail is Outlook

[slingsh0t@hotmail.com]

Outlook automatically blocks .exe and .bat files for security reasons.
Microsoft Office 2003 file types most commonly shared between people,
such as .doc, .xls, and .ppt files, are not blocked by Outlook- this
means the receiver's IT department may be disallowing those files. Is
that a possibility?