OMA - unable to connect to your mail server  - Application log error eventid:1805 error: 400

Posted on 2006-07-10
Last Modified: 2008-01-09

Searching forums and web, there are a number of references to this error,

but most are for the 403 whereas the error we receive in the application log is 400.


As mentioned its a tricky one. So far I have verified according to kb docs and others sources.

-OMA vdir is set to basic authentication, domain is set to "our domain". (In fact all of the

relevant vdirs: OMA, exchange-oma, microsoft-server-activesync, Exchange, Exchweb, have been

double checked against an SBS server that does work for authentification and SSL. framework 1.1.4322.573. Reinstalled: "aspnet_regiis.exe -i". Although one curiousity is that the ASP.NET

tab does not appear on this server.

-ExchangeVDir key is set to the proper exchange-oma vdir

-no host headers on default web site and using the standard ports.

-have re-run the CEICW

-Mobile access IS enabled globally and individually

Error message in log is as follows:  Source: MSExchangeOMA, Category:(1000), EventId:1805

Request from user test@BCN.local resulted in the Microsoft(R) Exchange back-end server SERVER1 returning an HTTP error with status code 400

Cache-Control: private
Content-Length: 0
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
Date: Mon, 10 Jul 2006 09:57:10 GMT

Original Request:
Content-Type: text/xml
Depth: 0
Content-Length: 389
Question by:vehastings
  • 4
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LVL 74

Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 17074555
If you look in IIS, Servername > Application Pools.  Do you have an ExchangeMobileBrowseApplicationPool?  With a directory below for /LM/W3SVC/1/root/OMA?

LVL 74

Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 17074591
Also, if that's there, can you access OMA via http://localhost/oma ?

LVL 74

Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 17074609
Ah... in testing this on my machine I just noticed that my .Net Framework is version 1.1.4322.2300 which is SP1.  You need to install that.

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- Combine task lists, docs, spreadsheets, and chat in one
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Author Comment

ID: 17076045
Hi Thanks for your suggestions but I have just managed to fix it.  We had changed the host header on the company web to server1.  When we changed it back to companyweb it worked fine.

LVL 74

Expert Comment

by:Jeffrey Kane - TechSoEasy
ID: 17077479
oh... that would probably be a problem... but you still should patch .Net Framework when you get a chance.


Author Comment

ID: 17079637
thanks for your help will do patch.

Accepted Solution

ee_ai_construct earned 0 total points
ID: 17296816
PAQ / Refund
ee ai construct, community support moderator

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