【求助】寄件被退回(ACL subscriber)，不知怎麼辦？
各位大大好！
小弟遇到一個問題：公司裡有人要寄mail給*****@swvainc.com，但是信件被退回(經測試，寄給其他"@swvainc.com"的帳號也一樣被退)，退信訊息如下：
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The original message was received at Tue, 22 Feb 2005 21:46:45 +0800 from root@localhost
----- The following addresses had permanent fatal errors ----- [email][email protected][/email]
(reason: 554 <6*-21*-23*-9*.hinet-ip.hinet.net[6*.21*.23*.9*]>: Client host rejected: ACL subscriber)
----- Transcript of session follows ----- ... while talking to imgw1.evehosting.net.:
>>> RCPT To:<[email protected]>
<<< 554 <6*-21*-23*-9*.hinet-ip.hinet.net[6*.21*.23*.9*]>: Client host rejected: ACL subscriber
554 5.0.0 Service unavailable
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公司SERVER的mail log...
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Feb 22 21:46:44 main sendmail[2255]: j1MDkiI02255: from=root, size=42, class=0, nrcpts=1, msgid=<200502221346.j1MDkiI02255@m***.e*******.com>, relay=root@localhost
Feb 22 21:46:44 main amavisd[2259]: starting. amavis 0.3.12 Tue Sep 9 10:12:48 CST 2003
Feb 22 21:46:45 main sendmail[2262]: j1MDkjK02262: from=<root>, size=378, class=0, nrcpts=1, msgid=<200502221346.j1MDkiI02255@m***.e*******.com>, relay=root@localhost
Feb 22 21:46:45 main sendmail[2258]: j1MDkiI02255: [email protected], ctladdr=root (0/0), delay=00:00:01, xdelay=00:00:01, mailer=amavis, pri=30042, dsn=2.0.0, stat=Sent
Feb 22 21:46:47 main sendmail[2265]: j1MDkjK02262: [email protected], ctladdr=<root> (0/0), delay=00:00:02, xdelay=00:00:02, mailer=esmtp, pri=30378, relay=imgw1.evehosting.net. [12.20.124.21], dsn=5.0.0, stat=Service unavailable
Feb 22 21:46:47 main sendmail[2265]: j1MDkjK02262: j1MDklJ02265: DSN: Service unavailable
Feb 22 21:46:47 main sendmail[2265]: j1MDklJ02265: to=a****, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30478, dsn=2.0.0, stat=Sent
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小弟用孤狗搜過"ACL subscriber"，只有英文結果...god...my poor english...
整理一下問題：
1. 看起來似乎是被擋了，但不知為何被擋？(試過用英文主旨、英文純文字內容、無附件)
2. ACL subscriber 是什麼意思，小弟還是摸不著頭緒...
3. 最重要的是...怎樣才能寄進去呢？
敢請大大們撥冗釋疑！感激不盡！
