Failed With Error Logondenied For Receive
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Inbound Authentication Failed With Error Logondenied For Receive Connector Exchange 2013
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Event Id 1035 Msexchangetransport
Now So I recently noticed that some curious individual was trying to log onto my Exchange server from Norway:
Event Id 1035 Msiinstaller
Log Name: Application Source: MSExchangeTransport Date: 7/15/2014 3:53:25 AM Event ID: 1035 Task Category: SmtpReceive Level: Warning Keywords: Classic User: N/A Computer: exchange01.mydomain.local Description: Inbound authentication failed with error LogonDenied for Receive http://www.microsoft.com/technet/support/ee/transform.aspx?ProdName=Exchange&ProdVer=8.0&EvtID=1035&EvtSrc=MSExchangeTransport&LCID=1033 connector Default exchange01. The authentication mechanism is Ntlm. The source IP address of the client who tried to authenticate to Microsoft Exchange is [xxx.xxx.xxx.xxx]. Intrigued, I looked at the authentication settings on my default receive connector to discover that Windows Integrated and Basic Authentication (after TLS) were allowed. Now I have three other connectors setup on the server. One is for the DAG communication https://community.spiceworks.com/topic/539470-externally-facing-exchange-2010-receive-connector to the other Mailbox server, one is for internal client (Outlook) communication, and the last one has a small list of internal servers that send e-mail notifications from their respective applications. Why would I want any authentication on the externally facing receive connector if all it does is collect inbound SMTP traffic from external sources? It would seem to me that even offering any form of authentication is inviting a potential brute force attack on my network via Exchange which could result in spamming/spoofing. Am I reading this wrong? I've tried to find a best practice for securing this connector, but I keep finding articles on how the "default" connector should not be touched. I'd appreciate any one else's insight on the matter. Tags: Microsoft Exchange Server 2010Review it: (188) Reply Subscribe View Best Answer RELATED TOPICS: Exchange Receive connector authentication POP Connector in Exchange Exchange Receive Connector for Unifier?   7 Replies Habanero OP Randy1699 Jul 16, 2014 at 11:26 UTC email setup on mobile devices. The user needs to be able to authenticate. If you block authentication no one will be able to
for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help Ask a Question Ask for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to https://www.experts-exchange.com/questions/26918823/Recieving-Event-ID-1035-inbound-authentication-failed-with-error-LogonDenied-for-Recieve-connector-Default-Exchange-2010-Server.html Get Help Expand Search Submit Close Search Login Join Today Products BackProducts Gigs http://serverfault.com/questions/589742/user-account-was-locked-out-from-exchange-server-how-to-prevent-in-future Live Careers Vendor Services Groups Website Testing Store Headlines Experts Exchange > Questions > Recieving Event ID 1035 inbound authentication failed with error LogonDenied for Recieve connector Default Exchange 2010 Server Want to Advertise Here? Solved Recieving Event ID 1035 inbound authentication failed with error LogonDenied for Recieve connector Default Exchange 2010 Server Posted on 2011-03-29 failed with Exchange Email Servers Windows Server 2008 1 Verified Solution 12 Comments 19,704 Views Last Modified: 2012-05-11 I am getting the following error in the even log of my exchange 2010 HUB/CAS Server: EVENT ID: 1035 Inbound authentication failed with error LogonDenied for Receive connector Default EXCHSVR. The authentication mechanism is Ntlm. The source IP address of the client who tried to authenticate to Microsoft Exchange is [10.0.5.25]. This IP (10.0.5.25) failed with error does need to relay through the server, but I'm not sure how to make it happen. I didn't have a problem with this on exchange 2003, but with exchange 2010 I get the above error. Any assistance would be greatly appreciated. Thanks. 0 Question by:denver218 Facebook Twitter LinkedIn Google LVL 5 Best Solution byJamesGolden If you didn't setup a Receive connector then you can't send email to exhcange. The default Receive connector can be modified or (best practice) is to create a new Receive Connector with the IP address Go to Solution 12 Comments LVL 41 Overall: Level 41 Exchange 38 Windows Server 2008 15 Email Servers 14 Message Active today Expert Comment by:Amit2011-03-29 check these two http://www.eggheadcafe.com/software/aspnet/30547218/event-id--1035-showing-up-on-an-exchange-2007-server.aspx http://support.microsoft.com/kb/979174 0 LVL 5 Overall: Level 5 Exchange 4 Email Servers 1 Windows Server 2008 1 Message Accepted Solution by:JamesGolden2011-03-29 If you didn't setup a Receive connector then you can't send email to exhcange. The default Receive connector can be modified or (best practice) is to create a new Receive Connector with the IP address of that server. Here is a good article to walk you through it: http://technet.microsoft.com/en-us/library/bb125159.aspx Hope that helps. 0 LVL 4 Overall: Level 4 Message Active 1 day ago Author Comment by:denver
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top User account was locked out from exchange server - how to prevent in future? up vote 4 down vote favorite I had a bizarre instance this morning and I'm hoping someone can help me shed some light as to what's happened. A user complained about being locked out this morning. After resetting the password, we noticed that the account was almost instantaneously locked out again. We looked through the audit logs to discover the requests were coming from our Exchange server - something I had never really seen before. We looked through the OWA logs to discover that there were no entries in there corresponding to that username. We disabled OWA, ActiveSync, MAPI, etc and the account continued to be locked out. After looking through the event viewer logs on the Exchange server, we came across this entry. Inbound authentication failed with error LogonDenied for Receive connector Default EMAILSERVER. The authentication mechanism is Login. The source IP address of the client who tried to authenticate to Microsoft Exchange is [XX.XX.XX.XX]. With nowhere left to turn, we black-hole'd the traffic from that IP address and the account lockouts ceased. This was a public IP address that resolved to a country where I would not expect to receive much mail from. My questions are : How was this IP address attempting to authenticate? I can't see anything in my logs that would make any sense to me as to the vector which they tried to log in. How can I prevent this from happening in the future? This is Exchange 2010 SP3 and unfortunately Edge Transport is not a viable option at this point :( exchange-2010 brute-force-attacks share|improve this question edited Apr 17 '14 at 15:06 asked Apr 17 '14 at 14:45 DKNUCKLES 3,29822854 Hello which Event logs did you see this entry on ? –user242895 Sep 17 '14 at 21:51 add a comment| 1 Answer 1 active oldest votes up vote 6 down vote accepted "Receive connector" means SMTP. Look at your transport connector logs. Unless you have a good reason to, you shouldn't let Excha