migrate error:Socket closed while reading data from server

[zhangyq]

hello, now i meet a question when i migrate the users between servers.my environment is : both server1 and server2 are : redhat as5 ,zimbra5.0.7

when i run the command : usr/bin/imapsync --host1 192.168.0.126 --user1 user1@domain.com --password1 aaaaaa --port1 143 --host2 192.168.0.135 --user2 user1@domain.com --password2 111111 --port2 143 --sep1 @ --syncinternaldates --exclude Emailed Contacts . It shows me the error :Socket closed while reading data from server.

The ditails information is follows:
[root@mail1 webapps]# /usr/bin/imapsync --host1 192.168.0.126 --user1 user1@domain.com --password1 aaaaaa --port1 143 --host2 192.168.0.135 --user2 user1@domain.com --password2 111111 --port2 143 --sep1 @ --syncinternaldates --exclude Emailed Contacts
$RCSfile: imapsync,v $ $Revision: 1.99 $ $Date: 2004/10/04 18:42:40 $
Mail::IMAPClient version used here is 3.05 auth md5 : 0
From imap server [192.168.0.126] port [143] user [user1@domain.com]
To imap server [192.168.0.135] port [143] user [user1@domain.com]
Auth CRAM-MD5 not supported by IMAPClient 3.05
Error login : [192.168.0.135] with user [user1@domain.com] : Socket closed while reading data from server. I am very confused. Can somebody help me?
Thanks!