Certain emails w/ PDF attachments don't go through to recipient. But only some.
Every once in a while, one email with small PDF attachments (not big enough to hit the 20MB limit) will not go through to the recipient. Even if it shows up in my sent mail, the recipient doesn't receive it on their end. Seems to be sporadic. Any one have any ideas? Would greatly appreciate any advice. Thanks
MacBook Air 13″, macOS 12.2