Hello
ERROR_T = 5 = Timeout step chain in step 1900
ERROR_C = 0x076C01F7
= 0x076C / 0x01F7
= 1900 / 503
Error in step 1900 and the last smtp server response message code was 503
503 = This mail server requires authentication
you have a problem with the authentication
test you programm with another email account !