troubleshooting Question

SBS 2011 Server won't allow clients to connect

Avatar of Patrick Doman
Patrick DomanFlag for United States of America asked on
ExchangeSBSEmail Servers
4 Comments1 Solution182 ViewsLast Modified:
Windows Machines in a SBS 2011 network can't seem to connect to the Exchange. When we open outlook we are prompted for username and password. Don't think anything changed with the server. Running Exchange 2010 SP3 Update Rollup 14

I replaced the firewall last night, things were fine.
I looked this morning, people are able to login using OWA but just not with outlook.

I tried setting up a new profile for a user, it does not find the account/server. Just keeps searching over and over

Event log errors:

Event ID: 12016 MSExchangeTransport
There is no valid SMTP Transport Layer Security (TLS) certificate for the FQDN of <servername.domainname.local> The existing certificate for that FQDN has expired. The continued use of that FQDN will cause mail flow problems. A new certificate that contains the FQDN of <servername.domainname.local> should be installed on this server as soon as possible. You can create a new certificate by using the New-ExchangeCertificate task

Event ID: 12015   MSExchangeTransport
Thumbprint : ojpoj23po54j23p4oj32pj2     An internal transport certificate expired.

These warnings and errors have been coming up in the event logs for a long time.
I believe they are related to the Exchange SSL Certificate including the host name of the server which is no longer valid / supported.


Again, the mail is flowing to OWA.
I can hit https://mail.companyname.com/owa just fine. All mail is being delivered. Just can't use Outlook to connect.
ASKER CERTIFIED SOLUTION
bas2754

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