When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Computer & Technology RelatedPost here for help and discussion of computing and related technology. Internet, TVs, phones, consoles, computers, tablets and any other gadgets.
Sometimes this can occur if the system uses a Unix internet gateway and it's not configured correcly.
However it tends to happen with all attachements and only to mails going outside the Microsoft environment.