Exchange server sending but not receiving

I am not sure how to do this. I honestly have not done a telnet since my unix days years ago. Any help is really appreciated! Thanks!

Yes check receive connectors settings from EMC

Sorry for the delayed response, my dog of 11 years passed away I had to take care of that.

I checked the connectors but I do not know what it is I am exactly looking for. The telnet session showed no problems. I am able to send out no problem from the Exchange server 2010 and Outlook port25. I am unable to receive from Outlook. I am unable to send email from my SQL database now as well.  Is this an authentication issue maybe needing port 587 to relay? I am lost, my developer is stumped, exchange guys, its boogling our minds.

What should I be looking for in the send/receive connectors? Help needed please! Calling all EXPERTS!
These are some of the errors I get in the Windows Event viewer.

Log Name:      Application
Source:        MSExchange Configuration Cmdlet - Management Shell
Date:          4/16/2012 2:44:12 PM
Event ID:      23
Task Category: RBAC
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      XXXXXXXXXXXXX.com
Description:
(Process w3wp.exe, PID 6324) "RBAC authorization is unavailable due to application exception System.Security.Principal.IdentityNotMappedException: Some or all identity references could not be translated.
  at System.Security.Principal.SecurityIdentifier.Translate(IdentityReferenceCollection sourceSids, Type targetType, Boolean forceSuccess)
  at System.Security.Principal.SecurityIdentifier.Translate(Type targetType)
  at System.Security.Principal.WindowsIdentity.GetName()
  at System.Security.Principal.WindowsIdentity.get_Name()
  at Microsoft.Exchange.Configuration.Authorization.ExchangeAuthorizationPlugin.TryFindUserByWsManSenderDetails(WsManSenderDetails wsManSenderDetails, ADRawEntry& userEntry)
  at Microsoft.Exchange.Configuration.Authorization.ExchangeAuthorizationPlugin.AuthorizeUser(IntPtr senderDetails, String& redirectURL)."
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
 <System>
   <Provider Name="MSExchange Configuration Cmdlet - Management Shell" />
   <EventID Qualifiers="49152">23</EventID>
   <Level>2</Level>
   <Task>2</Task>
   <Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2012-04-16T18:44:12.000Z" />
   <EventRecordID>5435642</EventRecordID>
   <Channel>Application</Channel>
   <Computer>XXXXXXXXXXXXXXXXXXX</Computer>
   <Security />
 </System>
 <EventData>
   <Data>w3wp.exe</Data>
   <Data>6324</Data>
   <Data>System.Security.Principal.IdentityNotMappedException: Some or all identity references could not be translated.
  at System.Security.Principal.SecurityIdentifier.Translate(IdentityReferenceCollection sourceSids, Type targetType, Boolean forceSuccess)
  at System.Security.Principal.SecurityIdentifier.Translate(Type targetType)
  at System.Security.Principal.WindowsIdentity.GetName()
  at System.Security.Principal.WindowsIdentity.get_Name()
  at Microsoft.Exchange.Configuration.Authorization.ExchangeAuthorizationPlugin.TryFindUserByWsManSenderDetails(WsManSenderDetails wsManSenderDetails, ADRawEntry&amp; userEntry)
  at Microsoft.Exchange.Configuration.Authorization.ExchangeAuthorizationPlugin.AuthorizeUser(IntPtr senderDetails, String&amp; redirectURL)</Data>
 </EventData>
</Event>

Turns out it was a 'state 14' error. That could mean a mess of things. without the suggestion I may not have gotten to the bottom of the issue. I have abandon the Exchange server for another solution using form mail.