求助：exchange能收到外部邮件，不以发送外部邮件
ISA里的规则开放网内所有电脑的DNSexchange服务器可以正常上网。
所有的配置都检查过。
使用netdiag /test:dns 结果如下
.........
Computer Name: OLYMEXCH1
DNS Host Name: olymexch1.olympic.com
System info : Windows 2000 Server (Build 2195)
Processor : x86 Family 15 Model 2 Stepping 9, GenuineIntel
List of installed hotfixes :
KB822343
KB823182
KB823559
KB824105
KB825119
KB826232
KB828035
KB828749
KB832353
KB832359
KB841356
KB842773
KB883935
KB885836
KB890046
KB893756
KB893803v2
KB896358
KB896422
KB896423
KB896424
KB899587
KB899589
KB899591
KB900725
KB901017
KB901214
KB904706
KB905414
KB905749
KB908519
KB908531
KB911280
KB911564
KB911567-OE55SP2-20060317.162653
KB912919
KB913580
KB914388
KB914389
KB917008
KB917344
KB917422
KB917537
KB917736
KB917953
KB918899-IE501SP4-20060725.072042
KB920670
KB920683
KB920685
KB920958
KB921398
KB921883
KB922582
KB922616
KB923191
KB923414
KB924191
KB925486-IE501SP4-20060918.174951
Q147222
Q828026
Update Rollup 1
Netcard queries test . . . . . . . : Passed
Per interface results:
Adapter : Local Area Connection
Netcard queries test . . . : Passed
Global results:
Domain membership test . . . . . . : Passed
NetBT transports test. . . . . . . : Passed
List of NetBt transports currently configured:
NetBT_Tcpip_{A7142E67-62AB-4E6F-AEB9-B29550E5C823}
1 NetBt transport currently configured.
DNS test . . . . . . . . . . . . . : Passed
PASS - All the DNS entries for DC are registered on DNS server '192.168.0.15
0' and other DCs also have some of the names registered.
The command completed successfully
而且在该台服务器上使用nslookup命令完全可以正确的解析正常驻的MX记录。
看样子是网络很正常的样子。可是怎么都发不出去。
然后在网上找了半天，也没有找出个所以然来。刚刚找到了一个SMTPdiag。结果测试了一下。
使用smtpdiag的症断结果如下：
C:\>smtpdiag XXXX@XXXXX.com cakerwu@yahoo.com.cn -d 202.96.128.68 /v
Searching for Exchange external DNS settings.
Computer name is OLYMEXCH1.
VSI 1 has the following external DNS servers:
202.96.209.133,202.96.128.68,202.96.134.134
Checking SOA for yahoo.com.cn.
Checking external DNS servers.
Checking TCP/UDP SOA serial number using DNS server .
TCP test succeeded.
UDP test failed.
Serial number: 2006091501
Checking TCP/UDP SOA serial number using DNS server .
Failed: DNS server may be down.
Checking TCP/UDP SOA serial number using DNS server .
Failed: DNS server may be down.
Checking internal DNS servers.
Checking TCP/UDP SOA serial number using DNS server .
TCP test succeeded.
UDP test failed.
Serial number: 2006091501
DNS server did not return a valid SOA record.
DNS server did not return a valid SOA record.
SOA serial number match: Failed with one or more failures.
Checking local domain records.
Starting TCP and UDP DNS queries for the local domain. This test will try to
validate that DNS is set up correctly for inbound mail. This test can fail for
3 reasons.
1) Local domain is not set up in DNS. Inbound mail cannot be routed to
local mailboxes.
2) Firewall blocks TCP/UDP DNS queries. This will not affect inbound mail,
but will affect outbound mail.
3) Internal DNS is unaware of external DNS settings. This is a valid
configuration for certain topologies.
Checking MX records using TCP: olympic-pcb.com.hk.
Warning: The TCP DNS query returned no results.
Checking MX records using UDP: olympic-pcb.com.hk.
Warning: No MX or A records were found for the local domain. If the records are
not configured, incoming mail can fail to be delivered to this server.
Checking remote domain records.
Starting TCP and UDP DNS queries for the remote domain. This test will try to
validate that DNS is set up correctly for outbound mail. This test can fail for
3 reasons.
1) Firewall blocks TCP/UDP queries which will block outbound mail. Windows
2000/NT Server requires TCP DNS queries. Windows Server 2003 will use UDP
queries first, then fall back to TCP queries.
2) Internal DNS does not know how to query external domains. You must
either use an external DNS server or configure DNS server to query external
domains.
3) Remote domain does not exist. Failure is expected.
Checking MX records using TCP: yahoo.com.cn.
Warning: The TCP DNS query returned no results.
Checking MX records using UDP: yahoo.com.cn.
Error: No MX or A records were found for the remote domain. Verify that the
remote domain is valid. Your firewall allows outbound DNS queries (Windows
NT/2000 Server requires TCP), and your DNS server can resolve external domains.
真是百思不得其解。
请高手想想办法.. 如果确定你Exchange的DNS没有故障的话，在Exchange上用telnet模拟SMTP通信测试一下 如果内部没有问题的话，可能处在isa上 问题已经解决。。。在网内新建一个SMTP服务器。把所有的外部邮件，都交给这台服务器处理。。
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