Q: Right after I upgraded my Mac to the Big Sur 11.3 operating system, I could no longer send e-mails with attachments using the Microsoft Outlook program.

Q: Right after I upgraded my Mac to the Big Sur 11.3 operating system, I could no longer send e-mails with attachments using the Microsoft Outlook program.

Here at work, we've got a single server doing email and file serving. It works just fine, but my job requires me to occasionally send out large .pdf attachments. Anything over around 3.2 MB gets ...