Getting weird warning in App log with Forefront on MB server

Posted on 2013-09-05
Medium Priority
Last Modified: 2013-09-11
I have used Forefront on Exchange many times in the past on Exchange 2007 and 2010. I am getting this warning relating to smtp in the App log.

Event ID 2064 - Unexpected SMTP server response. Expected: 220, actual: 500, whole response: 500 5.3.3 Unrecognized command

I found the article below which addresses this supposedly. I was a little concerned about creating another Receive Connector in Exchange just for Forefront. I never had to do this in the past. Yes, our default RC does have anonymous enabled. I need it this way to accept inbound emails just like the article states. Was wondering if anyone else ran into this problem and found another way to resolve it? It appears to be an issue with Forefront on the MB server trying to send notifications using the CAS. I am not getting any email alerts from the MB servers regarding scanning, updates etc.....

Question by:shadowtuck
  • 4
LVL 15

Expert Comment

ID: 39466749
Receive connector on Hub Transport server must have Exchange Servers option in Authentication and Permissions tabs.

Is this the case for your situation?

Author Comment

ID: 39466839
Yes and those are the default settings. The only thing different about this RC from the default is anonymous is checked but that is needed to receive inbound emails from our gateway. The article mentions this and states that Forefront is sending anonymous TLS and that is why it's failing. The solution is to create another RC without anonymous being checked. This has to be something different with Forefront because I never had to do this in the past. If this is a common issue, I don't understand why MS doesn't have a tech article on it.

Author Comment

ID: 39467551
I guess what my concern here is creating another Receive Connector. I want to make sure I don't interrupt the flow of email. I am not changing any settings on the two Receive Connectors I have now. I am just adding a third Connector for Forefront. Is there any particular type I should be using Choices are Internet, Internal, Custom etc....I am guessing if I don't specify a type, it should default to what I currently have.

Accepted Solution

shadowtuck earned 0 total points
ID: 39470375
I did some test in a test environment using the PS command in the link I posted. There was no issues at all after creating an additional Receive Connector using this command and the only difference between the one I created and the Default RC in Exchange is that Anonymous is not checked. All the other settings are the same.

Author Closing Comment

ID: 39482544
I solved my own issue using testing.

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

In all versions of ISA Server and the current version of FTMG, the default https protocol uses TCP port 443 and 563 only. This cannot be changed within the ISA or FTMG GUI and must be completed from a Windows cmd prompt on the ISA Server itself. …
In Africa (and potentially where you live…), reliability of ISPs is questionable.  With the increased reliance on e-mail as one of the primary forms of communication, the costs to business are significant based on interuption of ISP Connectivity.  T…
Free Data Recovery software is an advanced solution from Kernel Tools to recover data and files such as documents, emails, database, media and pictures, etc. It supports recovery from physical & logical drive after a hard disk crash, accidental/inte…
To export Lotus Notes to Outlook PST or Exchange and Domino Server files to Exchange Server or PST files with ease, go for Kernel for Lotus Notes to Outlook conversion tool. Through the video, you can watch the conversion process. A common user with…

624 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question