rsync - Mar 2006 - Error in running rsync through cron

Hi all
 
I am having trouble running an rsync script using cron.  When I run these
commands from the command line, they run fine.  I have upgraded the rsync
version to the latest one (2.6.7) on both the source and backup machines,
but am still getting these errors.  Can you please advise?
 
Here is the script:
#!/bin/bash
rsync --blocking-io
--exclude-from=/home/backups/rsync/attachments-exclude.lst --delete -ave ssh
myuser@source_server:/var/attachments/
/backups/var/varattachments/var/attachments/ | mail -s "`hostname`: rsync
of
/var/attachments/ from source_server done for `date '+ %m/%d/%Y'`"
backups

Here is the cron message that is sent out... 

Read from remote host source_host: Connection reset by peer

rsync: connection unexpectedly closed (1879176 bytes received so far)
[receiver]

rsync error: error in rsync protocol data stream (code 12) at io.c(359)

rsync: writefd_unbuffered failed to write 4 bytes: phase "unknown"
[generator]: Broken pipe (32)

rsync error: error in rsync protocol data stream (code 12) at io.c(909)

These errors are not consistent... I mean on one day... it gets 
 
Thanks

Srinivas

===========================Srinivas Kotapally, Analyst

BISIL N. A. Inc.
111 Presidential Boulevard Suite 246
Bala Cynwyd, PA 19004

Phone: +1 610 747 0341
Fax: +1 610 747 0343 
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On Tue, Mar 14, 2006 at 09:24:58AM -0500, Srinivas Kotapally
wrote:
> Read from remote host source_host: Connection reset by peer
This might be a connection-closing problem totally outside of rsync's
control.  See the Issues and Debugging page for how you can do some
detective work to find out for sure.  I'm thinking about a way to make
this easier to do in the future, such as adding a way to request that
rsync log what it is doing to a file.

..wayne..