Outlook Express attached files removed from received email

I work with a company often sending me emails with attachments.

Recently attachment (PDF and Word) files were removed when I downloaded the emails from one employee of said company.

I am using Pop Peeper where I was able to note that the attachments were on the mail server of my provider but when downloading the emails with Outlook Express the attached files had disappeared.

I then asked another employee of same company to send the same files with the same attachments and they all arrived safely in my mailbox.

I have checked that the specific sender is not blocked in OE.

It should be added that the first employee also sent same emails with attachments to my Hotmail address in Live Messenger, where attached files went all the way through to my mailbox.

Does anyone have experienced same problem and found a solution?

Best regards

 

I have no mail rules listed.

I am using Zone Alarm and cannot find any rules to remove attached files.

I asked same company to forward the same email with attached files to another email address, which I have with another service provider. In this case the attached files (PDF) were not removed. I take it that is proves that the problem is not to be found with Zone Alarm.

Any other suggestions?

Thank you.

 

"Do Not Allow Attachments" box is NOT selected.