Exchange 2003 no recibe correos
Debate general
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Hola a todos, tengo un exchange 2003 con windows server 2003, el Exchange esta publicado en el ISA para recibir y sin embargo no recibe, probé con esto https://www.testexchangeconnectivity.com/default.aspx y me da este error que no acabo de saber el por que ? ni tengo idea de donde buscar, lo que me dice es esto:
Testing Inbound SMTP Mail flow for domain clrosales@habanos.cu Failed to test inbound SMTP mail flow. 
Test Steps 
Attempting to retrieve DNS MX records for domain midominio.cu One or more MX records were successfully retrieved from DNS. 
Additional Details MX Records Host midominio.cu, Preference 0
Testing Mail Exchanger midominio.cu. One or more SMTP tests failed for this Mail Exchanger. Test Steps Attempting to resolve the host name midominio.cu in DNS. Host successfully resolved Additional Details IP(s) returned: 0.0.0.0 Testing TCP Port 25 on host midominio.cu to ensure it is listening and open. Testing Inbound SMTP Mail flow for domain clrosales@habanos.cu Failed to test inbound SMTP mail flow. Test Steps Attempting to retrieve DNS MX records for domain midominio.cu One or more MX records were successfully retrieved from DNS. Additional Details MX Records Host midominio.cu, Preference 0
Testing Mail Exchanger midominio.cu. One or more SMTP tests failed for this Mail Exchanger. Test Steps Attempting to resolve the host name midominio.cu in DNS. Host successfully resolved Additional Details IP(s) returned: 0.0.0.0 Testing TCP Port 25 on host midominio.cu to ensure it is listening and open.
Attempting to resolve the host name midominio.cu in DNSTesting Inbound SMTP Mail flow for domain clrosales@habanos.cu Failed to test inbound SMTP mail flow. Test Steps Attempting to retrieve DNS MX records for domain midominio.cu One or more MX records were successfully retrieved from DNS. Additional Details MX Records Host midominio.cu, Preference 0
Testing Mail Exchanger midominio.cu. One or more SMTP tests failed for this Mail Exchanger. Test Steps Attempting to resolve the host name midominio.cu in DNS. Host successfully resolved Additional Details IP(s) returned: 0.0.0.0 Testing TCP Port 25 on host midominio.cu to ensure it is listening and open. Attempting to resolve the host name midominio.cu in DNS. Host successfully resolved Attempting to retrieve DNS MX records for domain midominio.cu One or more MX records were successfully retrieved from DNS. Additional Details MX Records Host midominio.cu, Preference 0
Testing Mail Exchanger midominio.cu. One or more SMTP tests failed for this Mail Exchanger. Test Steps Attempting to resolve the host name midominio.cu in DNS. Host successfully resolved Additional Details IP(s) returned: 0.0.0.0 Testing TCP Port 25 on hostmidominio.cu to ensure it is listening and open. Host successfully resolved
Testing TCP Port 25 on host midominio.cu to ensure it is listening and open
The specified port is either blocked, not listening, or not producing the expected response
alguna idea??????????????
