史萊姆論壇 - yahoo 都會被退信

寄到pchome 或其他的都沒有問題但寄到 yahoo 就會被退回來
以下是退回來的內容
The attached message had transient non-fatal delivery errors

THIS IS A WARNING MESSAGE ONLY - YOU DO NOT NEED TO RESEND YOUR MESSAGE!

This server is configured to automatically retry delivery at configured intervals. Subsequent attempts to deliver this message are pending.

Failed address: 2001@yahoo.com.tw

--- Session Transcript ---
MX-record resolution of [yahoo.com.tw] in progress (DNS Server: 168.95.1.1)... P=005 D=yahoo.com.tw TTL=(27) MX=[mta.mail.tpe.yahoo.com] {202.1.238.78} P=001 D=yahoo.com.tw TTL=(27) MX=[mx2.mail.tw.yahoo.com] {202.1.238.251} P=001 D=yahoo.com.tw TTL=(27) MX=[mx1.mail.tw.yahoo.com] {202.1.238.248} Attempting MX: P=001 D=yahoo.com.tw TTL=(27) MX=[mx1.mail.tw.yahoo.com] {202.1.238.248} Attempting SMTP connection to [202.1.238.248 : 25] Waiting for socket connection... Socket connection established Waiting for protocol initiation... 220 YSmtp mta102.mail.tpe.yahoo.com ESMTP service ready EHLO mail.dosn.com.tw 421 VS1-IP Excessive unknown recipients - possible Open Relay http://help.yahoo.com/help/us/mail/spam/spam-18.html (#4.1.8) HELO mail.sn.com.tw Attempting MX: P=001 D=yahoo.com.tw TTL=(27) MX=[mx2.mail.tw.yahoo.com] {202.1.238.251} Attempting SMTP connection to [202.1.238.251 : 25] Waiting for socket connection... Winsock Error 10060: The connection timed out. Attempting MX: P=005 D=yahoo.com.tw TTL=(27) MX=[mta.mail.tpe.yahoo.com] {202.1.238.78} Attempting SMTP connection to [202.1.238.78 : 25] Waiting for socket connection... Socket connection established Waiting for protocol initiation... 220 YSmtp mta104.mail.tpe.yahoo.com ESMTP service ready EHLO mail.dosn.com.tw 421 VS1-IP Excessive unknown recipients - possible Open Relay http://help.yahoo.com/help/us/mail/spam/spam-18.html (#4.1.8) HELO mail.sn.com.tw This message is 61 minutes old; it has 0 minutes left in this queue Primary queue lifetime exceeded; message placed in retry queue
--- End Transcript ---