exim -d -odq r3@test.ex
To: localpart_with_236_chars_56789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456@test.example
****
-1
exim -d -odq r4@test.ex
To: localpart_with_256_chars_5678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456@test.example
****
exim -d -odq r5@test.ex
To: undisclosed recpients:;
****
+exim -d -odq r6@test.ex
+To: fred@
+****
no_msglog_check