site to site problem

[manchifung]

[01:09:01] [L] Logged off: abc (Duration: 9 seconds)
[01:09:01] [L] Connecting to abc -> IP=xx.xxx.xxx.xx PORT=21
[01:09:01] [L] Connected to abc
[01:09:01] [L] 220 (vsFTPd 2.0.5)
[01:09:01] [L] USER www
[01:09:01] [L] 331 Please specify the password.
[01:09:01] [L] PASS (hidden)
[01:09:01] [L] 230 Login successful.
[01:09:01] [L] SYST
[01:09:02] [L] 215 UNIX Type: L8
[01:09:02] [L] FEAT
[01:09:02] [L] 211-Features:
[01:09:02] [L] EPRT
[01:09:02] [L] EPSV
[01:09:02] [L] MDTM
[01:09:02] [L] PASV
[01:09:02] [L] REST STREAM
[01:09:02] [L] SIZE
[01:09:02] [L] TVFS
[01:09:02] [L] 211 End
[01:09:02] [L] PWD
[01:09:02] [L] 257 "/"
[01:09:02] [L] CWD /hynew
[01:09:02] [L] 250 Directory successfully changed.
[01:09:02] [L] PWD
[01:09:02] [L] 257 "/hynew"
[01:09:03] [R] Connecting to efg -> IP=xx.xxx.xxx.xx PORT=21
[01:09:03] [R] Connected to efg
[01:09:03] [R] 220 (vsFTPd 2.2.2)
[01:09:03] [R] USER www
[01:09:03] [R] 331 Please specify the password.
[01:09:03] [R] PASS (hidden)
[01:09:08] [R] 230 Login successful.
[01:09:08] [R] SYST
[01:09:08] [R] 215 UNIX Type: L8
[01:09:08] [R] FEAT
[01:09:08] [R] 211-Features:
[01:09:08] [R] EPRT
[01:09:08] [R] EPSV
[01:09:08] [R] MDTM
[01:09:08] [R] PASV
[01:09:08] [R] REST STREAM
[01:09:08] [R] SIZE
[01:09:08] [R] TVFS
[01:09:08] [R] UTF8
[01:09:08] [R] 211 End
[01:09:08] [R] PWD
[01:09:08] [R] 257 "/"
[01:09:08] [R] CWD /hynew
[01:09:08] [R] 250 Directory successfully changed.
[01:09:08] [R] PWD
[01:09:08] [R] 257 "/hynew"
[01:09:08] [R] TYPE A
[01:09:08] [R] 200 Switching to ASCII mode.
[01:09:08] [R] PASV
[01:09:08] [R] 227 Entering Passive Mode (xx,xxx,xxx,xx,234,102).
[01:09:08] [R] Opening data connection IP: xx.xxx.xxx.xx PORT: 60006
[01:09:08] [R] LIST -al
[01:09:08] [R] 150 Here comes the directory listing.
[01:09:08] [R] 226 Directory send OK.
[01:09:08] [R] List Complete: 115 bytes in 0.10 second (0.1 KB/s)
[01:09:13] [L] TYPE I
[01:09:13] [L] 200 Switching to Binary mode.
[01:09:13] [L] SIZE 1.jpg
[01:09:13] [L] 213 46025
[01:09:13] [L] MDTM 1.jpg
[01:09:13] [L] 213 20140213095455
[01:09:13] [R] TYPE I
[01:09:13] [R] 200 Switching to Binary mode.
[01:09:13] [R] SIZE 1.jpg
[01:09:13] [R] 550 Could not get file size.
[01:09:13] [L] PASV
[01:09:13] [L] 227 Entering Passive Mode (xx,xxx,xxx,xx,234,96)
[01:09:13] [R] PORT xx,xxx,xxx,xx,234,96
[01:09:13] [R] 200 PORT command successful. Consider using PASV.
[01:09:13] [R] STOR 1.jpg
[01:09:13] [R] 500 OOPS: vsf_sysutil_bind
[01:09:13] Site to Site Transfer Failed! (Attempting alternative method)
[01:09:13] [R] PASV
[01:09:13] [R] 500 OOPS: 500 OOPS: child died
[01:09:13] Site to Site Transfer Failed!
[01:09:13] [R] Transfer Failed: /hynew/1.jpg
[01:09:13] [L] TYPE A
[01:09:13] [R] Connection lost: efg (Duration: 10 seconds)
[01:09:13] [L] 200 Switching to ASCII mode.
[01:09:13] [L] PASV
[01:09:13] [L] 227 Entering Passive Mode (xx,xxx,xxx,xx,234,105)
[01:09:13] [L] Opening data connection IP: xx.xxx.xxx.xx PORT: 60009
[01:09:13] [L] LIST -al
[01:09:13] [L] 150 Here comes the directory listing.
[01:09:13] [L] 226 Directory send OK.
[01:09:13] [L] List Complete: 8 KB in 0.34 second (8.4 KB/s)
[01:09:13] Transfer queue completed
[01:09:13] Transferred 0 Files (0 bytes) in 0.53 second (0.0 KB/s)
[01:09:13] 1 File Failed

Local to ServerA is OK.
Local to ServerB is OK too.
But one I try to transfer ServerA to ServerB, it's failed.

2 servers are Linux Centos, vsftpd, and I am the Admin.
please let me know how to change vsftpd.conf file to make SiteToSite.
Thanks.