skipped/ignored: import_netmail() moves the file position to the end of the
message but returns non-zero (-2) when encountering an AreaFix message
and the calling code assumes a non-zero return value indicates an error and
the file position is somewhere *before* the end of the message (the NUL char).
Resolved by saving the current file position before calling import_netmail()
and restoring it after, so it matters not what improt_netmail does with the
file pointer or what the return value is (in this case).
Thanks for the report, Joe!