Bounce
반송된 메일이 있는 경우 Error rate가 올라감
Original Bounce Messages
# cd /var/lib/sympa/bounce/kreonet-news@lists.kreonet.net # ls xxxx@yonsei.ac.kr .... .... # cat xxxx@yonsei.ac.kr ... Subject: Undelivered Mail Returned to Sender To: kreonet-news-owner@lists.kreonet.net ... I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
Bounced members and Reason
반송된 주소 목록 및 반송 사유 보기
Admin → Bounces → 목록에서 특정 주소 클릭 → View last bounce
https://lists.kreonet.net/sympa/reviewbouncing/kreonet-news
IPv6 PTR Error
IPv6 주소에 대해 DNS의 reverse domain 이 잘못 설정된 경우
This is the mail system at host lists.kreonet.net. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system <****@yonsei.ac.kr>: host aspmx.l.google.com[2404:6800:4008:c03::1b] said: 550-5.7.1 [2001:320:11:248:546f:4bff:fef8:c9] Gmail has detected that this 550-5.7.1 message does not meet IPv6 sending guidelines regarding PTR records 550-5.7.1 and authentication. For more information, go to 550 5.7.1 https://support.google.com/mail/?p=IPv6AuthError 41be03b00d2f7-78e41c8cf4dsi11013936a12.313 - gsmtp (in reply to end of DATA command)