RPC Error: Unable to send

[stebo730]

I have constant RPC errors on 1 server out of 15. All Clients and server NT4 SP6a, Networker 6.1.3/4.

Hosts files all OK, errors when run manually from client, Network Card changed, however, I cannot change to Full Duplex as it falls off Network following reboot. Have reinstalled SP6a, removed and added RPC config from Network Services.

It does backup Exchange using the exchange module OK and it backsup smaller specified Save Sets, ie, an Access Database Folder.

Please help

 

[Chacalinc]

this is a communcation problem, the client and server can't communicate between them. I ussualy saw it with LAN problems... make a little test, copy a file (10MB) from client to the server and copy the file back from server to client.

Remember that NW is OS dependant, so if the OS is going wrong.. well, don't expect too much from NW.

Cheers.

 

[stebo730]

The Client NT Server operates without problem. At least 300 Users use this Server daily for their Home Area Files, Access Databases, AV operates OK and is one of our newest servers a Dell Poweredge 2600. Only Networker has the problem.

Network switches have been changed and new fibres tested, all without change.

 

[RussN]

This problem is a communication issue. I was recieving the same errors during brick level backups and always on the same exchange mailboxes. Our intrusion detection system was blocking it and we had to make the proper adjustments.