503 error

starry

偶尔发生下列这种错误,,,这是什么原因引起的呢?

Fri 2011-01-07 12:18:35: <-- 503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.

wxhsh

看字面是帐号被禁发非本地地址，看下用户是否设限。

starry

权限设置没错,
而且只是有时有这种情况出现,大多数情况下没有问题

wxhsh

还是贴下完整日志吧。

starry

--- Session Transcript ---
Fri 2011-01-07 12:18:14: Parsing message <xxxxxxxxxxxxxxxxxxxxxxxx\pd35000001312.msg>
Fri 2011-01-07 12:18:14: *  From: ilan@aaaaa.com.cn
Fri 2011-01-07 12:18:14: *  To: user1@bbbbb.com.cn
Fri 2011-01-07 12:18:14: *  Subject: RE: revised design for polo
Fri 2011-01-07 12:18:14: *  Size (bytes): 46356
Fri 2011-01-07 12:18:14: *  Message-ID: <004701cbae21$d5351250$7f9f36f0$@com.cn>
Fri 2011-01-07 12:18:14: *  Route slip host: bbbbb.com.cn
Fri 2011-01-07 12:18:14: *  Route slip port: 25
Fri 2011-01-07 12:18:14: Attempting SMTP connection to [bbbbb.com.cn]
Fri 2011-01-07 12:18:14: Resolving MX records for [bbbbb.com.cn] (DNS Server: 202.181.202.140)...
Fri 2011-01-07 12:18:14: ProcessMXRecords (1)
Fri 2011-01-07 12:18:14: *  Packet from DNS server was not valid
Fri 2011-01-07 12:18:14: Attempting SMTP connection to [bbbbb.com.cn:25]
Fri 2011-01-07 12:18:14: Resolving A record for [bbbbb.com.cn] (DNS Server: 202.181.202.140)...
Fri 2011-01-07 12:18:14: *  Packet from DNS server contained an outdated response
Fri 2011-01-07 12:18:23: *  DNS: 10 second wait for DNS response exceeded (attempt 1 of 3)
Fri 2011-01-07 12:18:23: Attempting SMTP connection to [bbbbb.com.cn:25]
Fri 2011-01-07 12:18:23: Resolving A record for [bbbbb.com.cn] (DNS Server: 202.181.224.3)...
Fri 2011-01-07 12:18:33: *  DNS: 10 second wait for DNS response exceeded (attempt 2 of 3)
Fri 2011-01-07 12:18:33: Attempting SMTP connection to [bbbbb.com.cn:25]
Fri 2011-01-07 12:18:33: Resolving A record for [bbbbb.com.cn] (DNS Server: 202.181.202.140)...
Fri 2011-01-07 12:18:35: *  D=bbbbb.com.cn TTL=(0) A=[203.86.233.229]
Fri 2011-01-07 12:18:35: Attempting SMTP connection to [203.86.233.229:25]
Fri 2011-01-07 12:18:35: Waiting for socket connection...
Fri 2011-01-07 12:18:35: *  Connection established (192.168.0.3:59464 -> 203.86.233.229:25)
Fri 2011-01-07 12:18:35: Waiting for protocol to start...
Fri 2011-01-07 12:18:35: <-- 220 bbbbb.home ESMTP MailEnable Service, Version: 1.95-- ready at 01/07/11 12:19:45
Fri 2011-01-07 12:18:35: --> EHLO mail.aaaaa.com.cn
Fri 2011-01-07 12:18:35: <-- 250-home [xxx.xxx.xxx.xxx], this server offers 4 extensions
Fri 2011-01-07 12:18:35: <-- 250-AUTH LOGIN
Fri 2011-01-07 12:18:35: <-- 250-SIZE 102400000
Fri 2011-01-07 12:18:35: <-- 250-HELP
Fri 2011-01-07 12:18:35: <-- 250 AUTH=LOGIN
Fri 2011-01-07 12:18:35: --> MAIL From:<ilan@aaaaa.com.cn> SIZE=46356
Fri 2011-01-07 12:18:35: <-- 250 Requested mail action okay, completed
Fri 2011-01-07 12:18:35: --> RCPT To:<user2@bbbbb.com.cn>
Fri 2011-01-07 12:18:35: <-- 503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.
Fri 2011-01-07 12:18:35: --> RCPT To:<user1@bbbbb.com.cn>
Fri 2011-01-07 12:18:35: <-- 503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.
Fri 2011-01-07 12:18:35: --> RCPT To:<user3@bbbbb.com.cn>
Fri 2011-01-07 12:18:35: <-- 503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.
Fri 2011-01-07 12:18:35: --> QUIT
--- End Transcript ---

wxhsh

检查下发件人的客户端SMTP发件是否使用认证。

xiangrui

呃，兄弟也遇到了同样的问题。

The followingrecipient(s) cannot be reached:

bobby@acgnyc.orgon 2011-4-12 13:59

There was a SMTP communicationproblem with the recipient's email server.
Please contact your system administrator.

<XXX.com#5.5.0 smtp;503 This mail server requires authentication when attempting tosend to a non-local e-mail address. Please check your mail client settings orcontact your administrator to verify that the domain or address is defined forthis server.>

使用outlook发给上面的客户，就出现退信，换个帐号试了也不行。outlook是使用exchange模式连接的，不是pop3。但是OWA试了一下，是可以的。上周使用outlook还发过邮件给他们，都没有问题。

上周五把宽带更新了，给邮件服务器更换了IP地址，重新做了反向域名解析。发到其他用户还没有出现类似的问题。

有什么解决方法吗？