< mail.sz****.com.hk #4.0.0 X-Spam-&-Virus-Firewall; host mx.139.com[221.176.9.178] said:
421 Read data from client error (in reply to end of DATA command)>
[ 本帖最后由 yangeys 于 2011-2-18 16:36 编辑 ]作者: tarian 时间: 2011-2-18 15:52
找到的相关信息:
The problem is one of:
- Some brain damaged firewall discards "ICMP must fragment" packets
(only very small messages arrive OK)
- Some brain damaged firewall mis-handles ESMTP command pipelining (turn
off EHLO in the Postfix SMTP client)
- The receiving end does too much content inspection (small messages
arrive OK, large messages fail depending on load)