Receiving email from some senders but not all

[claire67]

I am receiving mail from some email addresses but not all - can anyone
suggest a solution?

 

[mac]

I am receiving mail from some email addresses but not all - can anyone
suggest a solution?

With such a vague and poorly phrased question, maybe you provide the theory
on what leads you to that opinion?

Or you check that all your correspondents are using the correct address to
contact you?

 

[William Peterson]

The only solution that works is to pick up your phone and call each person
whom you suspect is trying to send you email and have them send a test
message while on the phone, then see which ones come through and which ones
don't. That person will receive an "Undeliverable" message. In my
experience with this issue, I have found that 99% of the time, the sender
has the wrong email address.
Hope this helps!
Pete