Try this it work for me for teh same problem. In the Registry
ForwardBuffierMemory

    Key. Tcpip\Parameters

    Value Type. RIEG~_DWORD - Number of bytes

    Valid Range., <network MTU> - <some reasonable value smaller than
OxFFFFFF:FF >

    Default 74240 (enough for fifty 148G-byte packets, rounded to a
multiple of 256)

    Description; This parameter determines how much memory I P allocates to
store! packet data in the
    router packet queue. When this buffer space is lied, the router begins
discarding packets at random
    from its queue. Packet queue date buffers are 256 bytes in length, so
the value of this parameter
    should be a multiple of 256. Multiple buffers are chained together for
larger packets. The IP header
    for a packet is stored separately. This parameter is ignored and no
buffers are allocated if the IP
    routing function is not enabled.





Jan Batteram <JanB AT SWETS DOT NL> on 98-08-19 10:56:35

Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>

To:   ADSM-L AT VM.MARIST DOT EDU
cc:    (bcc: Bartolo G Guerrera/Met-Chem Canada Inc./CA)
Subject:  ANS1017E (RC-50) TCP/IP Session Rejected  Connection Failure




When i'am trying to backup my Exchange databases it does backup the
directory-store but when it starts the backup of the
Information-store after some second i get the following message

ANS1017E (RC-50) TCP/IP Session Rejected  Connection Failure

The dsierror.log contains the following information

08/19/1998 14:03:20 TcpFlush: Error 10054 sending data on Tcp/Ip socket
344.
08/19/1998 14:03:20 sessSendVerb: Error sending Verb, rc: -50
08/19/1998 14:03:20 TcpFlush: Error 10054 sending data on Tcp/Ip socket
344.
08/19/1998 14:03:20 TcpFlush: Error 10038 sending data on Tcp/Ip socket
4294967295.
08/19/1998 14:03:20 sessSendVerb: Error sending Verb, rc: -50
08/19/1998 14:03:20 cuConfirm: Received rc: -50 trying to send Confirm
verb
08/19/1998 14:03:20 TcpFlush: Error 10038 sending data on Tcp/Ip socket
4294967295.
08/19/1998 14:03:20 sessSendVerb: Error sending Verb, rc: -50

A second Exchange server gives no problems at all.

please help !!!

regards Jan Batteram