[메일] 시스템에서 야후메일로 발송 시 스팸처리되는 경우

야후 에러코드 : Yahoo! Mail > Mail > SMTP Error Codes
http://help.yahoo.com/l/kr/yahoo/mail/postmaster/errors/

[root@mws01 ~]# telnet mx1.mail.yahoo.co.kr smtp
Trying 119.161.16.24...
Connected to mx1.mail.yahoo.co.kr (119.161.16.24).
Escape character is '^]'.
553 Mail from 121.189.14.120 not allowed - 5.7.1 [BL21] Connections not accepted from IP addresses on Spamhaus PBL; see http://postmaster.yahoo.com/errors/550-bl21.html [550]
Connection closed by foreign host.
[root@mws01 ~]# telnet mx1.mail.yahoo.co.kr 25 
Trying 119.161.16.24...
Connected to mx1.mail.yahoo.co.kr (119.161.16.24).
Escape character is '^]'.
553 5.7.1 [BL21] Connections will not be accepted from 121.189.14.120, because the ip is in Spamhaus's list; see http://postmaster.yahoo.com/550-bl23.html
Connection closed by foreign host.

다음 사이트에서 블랙리스트 제거
http://www.spamhaus.org