smtps:plain://smtps.hiworks.com:465

220 mailapp.hiworks.co.kr ESMTP
EHLO localhost
250-mailapp.hiworks.co.kr
250-PIPELINING
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250 8BITMIME
AUTH PLAIN
334 
AGxlZWR3QGNvcmVsb2dpYy5jby5rcgBjb3JlMTI1NDc4
235 ok, go ahead (#2.0.0)
MAIL FROM:<webmaster@corelogic.co.kr>
250 ok
RCPT TO:<test1@corelogic.co.kr>
505 this account is unknown user (#5.5.1)
