miraculous from: field

[David Belohrad]

Dear All,

could someone give a hint?

I have an opened mail message. When I press 'r' to reply, a new mail
buffer is opened and the 'From' field is correctly filled with
'david at belohrad.ch'.

When on the same message I press however 'f' to forward the message, new
buffer opens, but this time the 'From' field contains incorrectly
'belohrad at bepc12494.cern.ch', which is clearly a composite of my login
name and FQHN.

Why that difference and what can I do to mitigate this?

thanks

david