smtp 메일전송 실패.

2020-01-25 11:09:56 SERVER -> CLIENT: 220 smtp.naver.com ESMTP 5vWTgkK-QPGhLtWTrVdBZg - nsmtp 2020-01-25 11:09:56 CLIENT -> SERVER: EHLO www.travelmaker.co.kr 2020-01-25 11:09:56 SERVER -> CLIENT: 250-smtp.naver.com Pleased to meet you 250-SIZE 20971520 250-8BITMIME 250-PIPELINING 250-AUTH PLAIN LOGIN 250 ENHANCEDSTATUSCODES 2020-01-25 11:09:56 CLIENT -> SERVER: AUTH LOGIN 2020-01-25 11:09:56 SERVER -> CLIENT: 334 VXNlcm5hbWU6 2020-01-25 11:09:56 CLIENT -> SERVER: dHJhdmVsbWFrZXJrb3JlYUBuYXZlci5jb20= 2020-01-25 11:09:56 SERVER -> CLIENT: 334 UGFzc3dvcmQ6 2020-01-25 11:09:56 CLIENT -> SERVER: dHJhdmVsTWFrZXJAMQ== 2020-01-25 11:09:56 SERVER -> CLIENT: 235 2.7.0 Accepted 5vWTgkK-QPGhLtWTrVdBZg - nsmtp 2020-01-25 11:09:56 CLIENT -> SERVER: MAIL FROM: 2020-01-25 11:09:56 SERVER -> CLIENT: 550 5.7.0 Restricted by spam policy 7PNGkRk2Sx6Tayuh7X22cA - nsmtp 2020-01-25 11:09:56 SMTP ERROR: MAIL FROM command failed: 550 5.7.0 Restricted by spam policy 7PNGkRk2Sx6Tayuh7X22cA - nsmtp 2020-01-25 11:09:56 The following From address failed: travelmakerkorea@naver.com : MAIL FROM command failed,Restricted by spam policy 7PNGkRk2Sx6Tayuh7X22cA - nsmtp ,550,5.7.0SMTP server error: MAIL FROM command failed Detail: Restricted by spam policy 7PNGkRk2Sx6Tayuh7X22cA - nsmtp SMTP code: 550 Additional SMTP info: 5.7.0 2020-01-25 11:09:56 CLIENT -> SERVER: QUIT 2020-01-25 11:09:56 SERVER -> CLIENT: 221 2.0.0 Closing connection 5vWTgkK-QPGhLtWTrVdBZg - nsmtp