We recently upgraded from Exchange 2013 CU6 to CU15. After upgrade users are unable to send emails to internet. They are able to receive emails. Internal mail flow is working fine. We are getting the following errors in event viewer
Log Name: Application
Source: MSExchangeFrontEndTransport
Date: 1/16/2017 4:18:03 PM
Event ID: 1049
Task Category: SmtpReceive
Level: Error
Keywords: Classic
User: N/A
Computer: xxx.xxx.local
Description:
SMTP could not find any destinations to proxy to. SMTP session details: [SmtpInSession: SessionId=636202031352468541 ConnectionId=282]
Log Name: Application
Source: MSExchangeFrontEndTransport
Date: 1/16/2017 4:20:21 PM
Event ID: 5039
Task Category: Routing
Level: Error
Keywords: Classic
User: N/A
Computer: xxx.xxx.local
Description:
Routing failed to select any Mailbox servers to proxy a mail item to in routing tables with timestamp 1/17/2017 12:17:05 AM. Transport process role: FrontEnd. Recipient databases: .
- Verified all Server Component State is active. 2 components ForwardSyncDaemon & ProvisioningRps were inactive. Set them to active.
- Created a new Send Connector but still we were getting the same events.
- Verified in ADSIEDIT and made sure that there are no stale entries of any Exchange server.
- Created Host file entry for FQDN and NetBIOS name of Exchange server, DCs and their respective IPs.
- Verified AD replication was healthy.
- Increased Protocol logs on Send connector and found that logs were not generated.
- Performed message tracking and found the error. "Stage:CommitMailItem, SmtpResponse:441 4.4.1 Error encountered while communicating with primary target IP address: "Failed to connect. Winsock error code: 10061, Win32 error code: 10061."" Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts. The last endpoint attempted was 192.168.46.1:2525"
I was not able to find any helpful articles to fix the issue. Please advice.
Regards, Naveen Devadiga