July 24, 2008 02:20pm pdt

1. jar3817 34,140
2. Nopius 21,639
3. PsiCop 20,150
4. _jesper_ 17,600
5. RaulDias 17,250
6. war1 13,122
7. kieran_b 13,000
8. fgrushev... 8,290
9. Sembee 8,186
10. grblades 7,875
11. hielo 6,675
12. Chris-Dent 6,000
13. uetian1707 5,800
14. kenfcamp 5,450
15. gheist 4,500
15. mwecom... 4,500

1. jlevie 347,626
2. PsiCop 246,639
3. anfi 85,387
4. jar3817 79,549
5. Nopius 66,789
6. kenfcamp 48,713
7. markt9 39,546
8. Sembee 34,311
9. war1 29,797
10. _jesper_ 27,800
11. it_alchem... 25,390
12. samri 25,291
13. grblades 24,470
14. ygoutham 19,675
15. HalldorG 18,447

10.11.2003 at 03:42AM PDT, ID: 20763726

	[x] Attachment Details

[x]

The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

The Grade of the Solution
The Zone Rank of the Expert Providing the Solution
The Number of Author and Expert Comments
The Number of Experts Contributing
The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!

8.0

Can't delivery email due to 451 Timeout waiting for client input

Zone: SendMail Email Server

Tags: 451, timeout, waiting, client

Dear Expert,
I don't know what cause our sendmail servers can't delvier email to some domains (Using hotmail / Yahoo mail can send and delvery). I try to monitor the mail log and always display "451 Timeout waiting for client input" this error message. Also, always wait a long long time until timeout and prompt the 451 error message.

However, I try to use /usr/lib/sendmail -v xxx@xxx.com < test or telnet command to send the email. It is successfully delivered the mail.

Our email servers mainly receive from external and relay internal mail to external one ( without open relay). So what I don't know what I do wrongly in the sendmail configuration.

Please help to answer my question, many many thanks anyone attend this mail.

Log Info
220 xxx.xxx.xxx.xx Microsoft ESMTP MAIL Service, Version: 5.0.2195.6713 read
y at Sat, 11 Oct 2003 18:38:09 +0800
>>> EHLO mailserver.xxx.xxx
250-mail.xxx.xxx.xxHello [xxx.xxx.xxx.xxx]
250-TURN
250-ATRN
250-SIZE
250-ETRN
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-8bitmime
250-BINARYMIME
250-CHUNKING
250-VRFY
250-X-EXPS GSSAPI NTLM LOGIN
250-X-EXPS=LOGIN
250-AUTH GSSAPI NTLM LOGIN
250-AUTH=LOGIN
250-X-LINK2STATE
250-XEXCH50
250 OK
>>> MAIL From:<xx.xx@xx.xxx.xx> SIZE=137592
250 2.1.0 xxx.xx@xxx.xx.xx....Sender OK
>>> RCPT To:<xxx@xxx.xxx.xxx>
>>> DATA
250 2.1.5 xx@xxx.xxx.xx
354 Start mail input; end with <CRLF>.<CRLF>

Then 451 timeout ...

Many Thanks for your professional advice

Start your free trial to view this solution

Question Stats

Zone: Networking

Question Asked By: paktung

Solution Provided By: jlevie

Participating Experts: 1

Solution Grade: B

Translate:

Loading Advertisement...

20080236-EE-VQP-29