如何解決qmail無(wú)法向部分服務(wù)器發(fā)信問(wèn)題？

lsunx

redhat linux as 3 update 6安裝qmail
netmail-1.05
vpopmail-5.4.10
安裝好，收發(fā)信都一切正常，但唯獨(dú)對(duì)幾個(gè)域名的mail，如果帶附件的話無(wú)法成功發(fā)送
無(wú)法發(fā)信的郵箱：
@sbaif.com
@deloitte.com.cn

日志中的錯(cuò)誤為
delivery 23031: deferral: Connected_to_64.18.7.10_but_connection_died._Possible_duplicate!_(#4.4.2)/

使用host命令查看顯示如下內(nèi)容
host -t mx sbaif.com
sbaif.com mail is handled by 100 sbaif.com.s8a1.psmtp.com.
sbaif.com mail is handled by 200 sbaif.com.s8a2.psmtp.com.
sbaif.com mail is handled by 300 sbaif.com.s8b1.psmtp.com.
sbaif.com mail is handled by 400 sbaif.com.s8b2.psmtp.com.
sbaif.com mail is handled by 450 mail.sbaif.com.

host -t mx deloitte.com.cn
deloitte.com.cn mail is handled by 200 deloitte.com.cn.s7a2.psmtp.com.
deloitte.com.cn mail is handled by 300 deloitte.com.cn.s7b1.psmtp.com.
deloitte.com.cn mail is handled by 400 deloitte.com.cn.s7b2.psmtp.com.
deloitte.com.cn mail is handled by 600 mailbackup.deloitte.com.hk.
deloitte.com.cn mail is handled by 100 deloitte.com.cn.s7a1.psmtp.com.

TELNET 25端口進(jìn)行測(cè)試如果如下：
telnet mail.sbaif.com 25
Trying 203.98.173.238...
Connected to mail.sbaif.com (203.98.173.23.
Escape character is '^]'.
220 server03.sbaif.com Microsoft ESMTP MAIL Service, Version: 5.0.2195.6713 ready at  Fri, 9 Dec 2005 09:48:47 +0800

telnet 64.18.7.10 25
Trying 64.18.7.10...
Connected to 64.18.7.10 (64.18.7.10).
Escape character is '^]'.
220 Postini ESMTP 7 y6_4_5c0 ready.  CA Business and Professions Code Section 17538.45 forbids use of this system for unsolicited electronic mail advertisements.

網(wǎng)上搜索不到任何這方面的資料，請(qǐng)高手幫忙分析一下可能的原因，及解決之道，謝謝！

大麻

多半是你的服務(wù)器 ip 列入了黑名單之列，或者向?qū)Ψ桨l(fā)送郵件太過(guò)于頻繁等等，原因太多了。

mxli

我的是這樣的
500 PSMTP Unimplemented command: Trying 64.18.7.10... - psmtp
500 PSMTP Unimplemented command: Connected to 64.18.7.10 (64.18.7.10). - psmtp
500 PSMTP Unimplemented command: Escape character is '^]'. - psmtp
500 PSMTP Unimplemented command: 220 Postini ESMTP 18 y6_4_5c0 ready.  CA Business and Professions Code Section 17538.45 forbids use of this system for unsolicited electronic mail advertisements. - psmtp
500 PSMTP Unimplemented command: 500 PSMTP Unimplemented command:  - psmtp - psmtp
500 PSMTP Unimplemented command: 500 PSMTP Unimplemented command:  - psmtp - psmtp
500 PSMTP Unimplemented command:  - psmtp
500 PSMTP Unimplemented command: 500 PSMTP Unimplemented com

lsunx

這此公司都是我們的合作伙伴，有頻繁的業(yè)務(wù)往來(lái)，經(jīng)常需要發(fā)送一些帶doc、xls文檔的郵件。
有哪些解決辦法嗎？

mxli

讓他們檢查下，還有你的反向解析做了發(fā)