Email attachments being dropped

My email is coming through fine, but losing all incoming attachments. This started yesterday afternoon. I first noticed it through Mac mail, which is what I generally use. Then I logged into webmail and found the attachments were not there either. These are not huge attachments. The senders are getting no error messages. The attachments just seem to be disappearing into space. This has never happened before and I’ve been using Dreamhost email for years. Has something changed that I need to adjust for?