I am unable to send and recieve emails, and when I run the exchange tool - "Exchange Mail Flow Troubleshooter", with the symptoms "Expected messages from senders are delayed or not received by some recipients", I get the errors:
Port 25, which is used by SMTP instance 'Default SSRS-KRS-EXC-01', did not respond on server 0000 and Port 587, which is used by SMTP instance 'Default SSRS-KRS-EXC-01', did not respond on server 0000.
I can telnet to the server using the name and access port 25.
I can't figure out what is blocking the port. This server has been up for several months working fine, and just stoped working this past weekned.