I’m sorry, I can’t parse this. Can you try again?
I used <dentistbusinessname>@<mydomain>. My name was never involved in the address.
That's the point, if you don't use your name in your address, you can't be <genericname>@<genericdomain>, which third parties will provide as their email,
Because I use the same scheme you do I've never had that issue, but several friends with common names have hit the issue having registered to more "normal" hosts, often as somewhat early adopters and thus having gotten their pick.
The annoying thing is the number of services these days that don't seem to require you to verify your email. Examples of the above included eBay and Spotify. On both occasions I had to contact support to ask them to delete the account.
I’m still not following. Who is this third party and what does it have to do with a confused receptionist?
Never had it go that far but I definitely had some odd reactions e.g. a support agent thinking I was a colleague.
On the other hand, if you have a relatively common name it avoids people giving your email address then behaving aggressively when you tell them to stop. I’ve had a few friends hit this issue.