[x]
Posted via EE Mobile

Search, ask, and monitor your questions on the go with EE Mobile. Visit Experts Exchange from your mobile device and never be out of touch again.
Question
[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!
5.2

Exchange server smtp error 500 5.3.3 Unrecognized command

Asked by d3m00n in Simple Mail Transfer Protocol (SMTP), Exchange Email Server, Virtual Private Networking (VPN)

Tags: Microsoft, Exchange Server, 2003, two servers in the same domain name over VPN, 500 5.3.3 Unrecognized command

Hi,

I have a problem with commonication between two Exchange servers 2003.

exAsrv-FWsiteA----VPN------FWsiteB----exBsrv

Where:
exAsrv - Exchange 2003
exBsrv - Exchange 2003
FWsiteA - Cisco ASA5505 ver 7.2(2)
FWsiteB - Cisco ASA5505 ver 7.2(2)

Problem is when I try to comunicate with both servers on port 25.

1.
a)From exAsrv.mydomain.local I can telnet to port 25 to exBsrv.mydomain.local, but I see:
220 ****************************************************************************
*****************************************
helo
500 5.3.3 Unrecognized command

b)From exBsrv.mydomain.local I can telnet to port 25 to exAsrv.mydomain.local, but I see:
220 ****************************************************************************
*****************************************
helo
500 5.3.3 Unrecognized command

From RFC I have only information which I don't understand, why command line to long???
      4.2.1.  REPLY CODES BY FUNCTION GROUPS

         500 Syntax error, command unrecognized
            [This may include errors such as command line too long]

2. Another test. I enabled possibilyty on both exchange servers to comunicate on port 252:
a) From exAsrv I can telnet to port 252 to exBsrv, but I see:
220 exBsrv.mydomain.local Microsoft ESMTP MAIL Service, Version: 6.0.3790.3959
ready at  Fri, 8 Feb 2008 14:43:58 +0100
helo
250 exBsrv.mydomain.local Hello [192.168.1.200]

b)From exBsrv I can telnet to port 252 to exAsrv, but I see:
220 exAsrv.mydomain.local Microsoft ESMTP MAIL Service, Version: 6.0.3790.1830
ready at  Fri, 8 Feb 2008 14:45:07 +0100
helo
250 exAsrv.mydomain.local Hello [192.168.0.17]

On the site B exchange server is available from outside as a main server, however I want to
set up replication of both server. But now it is not a problem.

I checked configuration on both cisco routers:
1. NAT rules are setup correctly.
2. I disabled ESMTP inspecion on both sides.

Trraffic seems like is going correctly.

3.
a) Test telnet from host1B.mydomain.local(winXP) to exAsrv.mydomain.local to port 25.
220 ****************************************************************************
*****************************************
helo
250 exAsrv.mydomain.local Hello [192.168.0.23]

b) Test telnet from host2B.mydomain.local(GNU/Linux) to exAsrv.mydomain.local to port 25.

Connected to 192.168.1.200 (192.168.1.200).
Escape character is '^]'.
220 *********************************************************************************************************************
helo
250 exAsrv.mydomain.local Hello [192.168.0.5]

c) Test telnet from host2B.mydomain.local(GNU/Linux) to exAsrv.mydomain.local to port 252

Connected to 192.168.1.200 (192.168.1.200).
Escape character is '^]'.
220 exAsrv.mydomain.local Microsoft ESMTP MAIL Service, Version: 6.0.3790.1830 ready at  Fri, 8 Feb 2008 15:17:04 +0100
helo
250 exAsrv.mydomain.local Hello [192.168.0.5]

d) Test telnet from host3B.mydomain.local(WinXP x64) to exAsrv.mydomain.local to port 25.
220 ****************************************************************************
*****************************************
helo
500 5.3.3 Unrecognized command
e) Test telnet from host3B.mydomain.local(WinXP x64) to exAsrv.mydomain.local to port 252.
220 exAsrv.mydomain.local Microsoft ESMTP MAIL Service, Version: 6.0.3790.1830
ready at  Fri, 8 Feb 2008 14:45:07 +0100
helo
250 exAsrv.mydomain.local Hello [192.168.0.32]


Does one of you see any regularity as I don't.

Where can be a problem?

I think that somwhere in Windows, but don't see any regularity.
Please note I tested it when software FW are disabled on both sites.

Thank's for any suggestion.


[+][-]02/12/08 08:18 AM, ID: 20876150Accepted Solution

View this solution now by starting your 30-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

About this solution

Zones: Simple Mail Transfer Protocol (SMTP), Exchange Email Server, Virtual Private Networking (VPN)
Tags: Microsoft, Exchange Server, 2003, two servers in the same domain name over VPN, 500 5.3.3 Unrecognized command
Sign Up Now!
Solution Provided By: d3m00n
Participating Experts: 1
Solution Grade: A
 
[+][-]02/08/08 06:30 AM, ID: 20850343Expert Comment

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]02/08/08 06:39 AM, ID: 20850454Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]02/08/08 06:43 AM, ID: 20850525Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]02/08/08 06:51 AM, ID: 20850630Expert Comment

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]02/08/08 06:56 AM, ID: 20850692Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]02/08/08 06:59 AM, ID: 20850738Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]02/08/08 07:06 AM, ID: 20850817Expert Comment

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]02/08/08 07:13 AM, ID: 20850888Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]02/08/08 07:25 AM, ID: 20851035Expert Comment

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]02/08/08 07:26 AM, ID: 20851050Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]02/08/08 07:40 AM, ID: 20851205Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]02/08/08 07:50 AM, ID: 20851284Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]02/08/08 08:35 AM, ID: 20851696Expert Comment

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 30-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]02/08/08 09:00 AM, ID: 20851957Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]02/08/08 09:08 AM, ID: 20852021Assisted Solution

Assisted solutions are selected by the member who asked the question as a comment that contributed to their question's solution.

Start your 30-day free trial to view this Assisted Solution or ask the Experts your question.

 
[+][-]02/08/08 09:08 AM, ID: 20852032Author Comment

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 30-day free trial to view this Author Comment or ask the Experts your question.

 
 
Loading Advertisement...
20091118-EE-VQP-93 / EE_QW_2_20070628