I am running WinXP Pro SP2, Norton AntiVirus 2007, and IE7. Sometimes Outlook Express strips attachments from email messages, and I can't figure out why. I've verified that the OE option to "Do not allow attachments to be saved or opened...." is UNchecked, and Norton is set to "Protect against TIMEOUTS". I cannot detect any pattern of what gets deleted; it doesn't seem to matter what the file extension is, although I 1st noticed the problem with a .zm9, which is a ZONEALARM rename extension for a .zip attachment. Anybody have any idea where I should look next?It could be your AV or even your ISP removing the attachments.
You could ask your ISP if they do that.
As a test try the Eicar site below, it may give us a better handle on this.
http://www.eicar.org/anti_virus_test_file.htmDo you see this happen at your END or the recipient's end? Are the attachments that get deleted always large files? Maybe your ISP, or the ISP of your recipients, has a limit on the file size for attachments.It is on the recipient's end. The same attachment gets delivered to others on the send-to list, including those using the same email host. It's just this one recipient that has the problem, so I'd say that rules out the size issue (which is 5MB, and the attachment isn't that large), and the ISP. I checked the ISP settings, and nothing is flagged to DELETE anything.
Thanks for the reply.I think I'd find a file that fails when you try to send it to yourself and then try it with your AV turned off.Good plan. Thanks. And, what email client is that recipient using? Outlook Express has a setting (Tools, Options, SECURITY) for "Do not allow attachments to be saved or opened that could potentially be a virus." That could be what's going on at his end.Sorry, I meant to say that the settings I 1st detailed were for the recipient's PC. That setting is set to "unchecked" on his OE.

Waiting for a colleague to provide the "always fails attachment".....