Can't send email

[John White]

Good day.

I use debian buster kmail 5.9.3 dbus.  Receives and sends fine on my  computer.
 
However, my receptionist's computer (same everything) will receive but not  send.

I get many errors, the first of which is : "Failed to get D-Bus interface of mailfilteragent"

I think I screwed it up by deleting something important when trying to get  rid of kwallet 
on her machine.  I am probably going to have to reinstall  debian but thought I would 
check with the list first.

Thanks

John

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