1. stat=Deferred: Connection refused by topcat.bridgew.edu
Currently there is some problem in the destination server's SMTP service.
2. stat=Deferred: Name server: nelsoncorp.gonelson.com: host name
lookup failure
DNS server unable to resolve the destination host name
3. stat=Deferred: Connection timed out with ostint.com.
Network connection is too slow
4. stat=Sent (OK)
The message is sent successfully
5. stat=Sent ( <>
Queued> mail for delivery)
Mail accepted from the MUA and spooled for later delivery
6. stat=Sent (Message queued)
The queued message has been sent successfuly
7. stat=Sent (Message received OK.)
Acknowledgment recieved from the reciever's SMTP Server
8. stat=User unknown
Ofcourse the user does not exist in your system
리턴메일을 확인해 보면 답이 보일 것이다.
리턴메일 (reason: 550 5.7.1 Service unavailable; Client host [222.233.52.58] blocked using Spamhaus Blocklist,
mail fr...IP banned; To request removal from this list see http://www.spamhaus.org/query/bl?ip=222.***.***.*** .)
스팸리스트에서 del list 하고 2시간 정도 지나면 정상발송 된다.
9. stat=Sent (QAA10135 Message accepted for delivery)
Message accepted from Mail user agent e.g. OUTLOOK or Netscape mail client
to be sent to the destination address
10. stat=Deferred: mail.proconinc.com.: No route to host
The network is down temporarily
11. stat=Deferred: 452 Cannot write to message file
some permissions problem in the local system (you have to investigate if
some specific problem is coming due to this)
12. stat=Deferred: 451 4.1.8 <>...
Domain of sender address does not resolve
The sender does not have a valid and registered domain name
13. stat=Deferred: Connection reset by mail.nbc.netcom.ca.
Some fatal error occured while communicating with host
14. stat=Service unavailable
웨버샌드윅에서 메일이 안 들어 온단다. 확인하니 위 에러가 뜨더라. 네임서버에서 서버를 못찾나 생각했는데,
다른 서버에서 보내보니 잘 들어간다.
서버가 뉴욕에 있다는데, 이건 메일이 수신서버에 도착도 안했다는 뜻....
스팸리스트 체크해 보니 CBL에서 딱 걸린다. remove 하고 30분 정도 지나니 리스트에서 빠지고 2시간 정도 지나니
메일 정상 수신 된다. 즉, 위 에러시에는 스팸을 체크해 봐야함.....
15. stat=Deferred: 451 4.1.8 <>... Sender
domain must resolve
You must have configured it for "before reciveing mails check for the
sender's domain authenticity"