i have 6 diferent exchange servers in cluster, the exch version is 2003 ent edition, and the SO is windows2003 ent ed.
the servers are deployed in 3 administrative groups, and two different AD Sites
- 2 servers in adminsitrative group A, on site 1
- 3 servers in administrative group B, on site 1
- 1 server in administrative group C, on site 2
if I send a mail from an account in any server on Admin. Group B, to any account in the server in Admin Group C; the messages queued in a SMTP Connector to that server, but the message do not deliver, if I force connection, nothing happens.
before a few minutes, the message is sent to another server in the Admin Group "A" or "B", and enqueued in the SMTP Server queue of this one, this happens until the messages is delivered by the first servers in the Admin Group A, this is the only server who aparently is capable to deliver messages to server in the Admin Group C.
I have a few minutes delay, and I still have no consecuences, but it is not a regular behavior. this configuration has been working with out changes since 2 year ago.
I already check the DNS and everything looks ok
from all the servers in Admin Groups "A" and "B" I can reach by ping the server in Admin Group C, also I can connect using telnet to port 25.
all pings and telnets were tested using FQDNs and IPs
there something more that I can check?, you have any suggestion to solve this?