** a@test.ex F=<CALLER@test.ex> R=client T=send_to_server H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after pipelined MAIL FROM:<CALLER@test.ex>: 550 NO
Exim version x.yz ....
LOG: MAIN
** a@test.ex F=<CALLER@test.ex> R=client T=send_to_server H=127.0.0.1 [127.0.0.1]: SMTP error from remote mail server after pipelined MAIL FROM:<CALLER@test.ex>: 550 NO