[Mail] Postfix SMTP server error

[weixin_38064085]

Transcript of session follows.

Out: 220 mail.abc.com ESMTP Postfix
In:  EHLO localhost
Out: 250-mail.abc.com
Out: 250-PIPELINING
Out: 250-SIZE 20480000
Out: 250-ETRN
Out: 250-AUTH PLAIN LOGIN
Out: 250-AUTH=PLAIN LOGIN
Out: 250-XVERP
Out: 250 8BITMIME
In:  MAIL FROM:<[e-mail]>;
Out: 250 Ok
In:  RCPT TO:<[e-mail]>;
Out: 250 Ok
In:  DATA
Out: 354 End data with <CR>;<LF>;.<CR>;<LF>;
Out: 451 Error: queue file write error
In:  QUIT
Out: 221 Bye

////
有谁遇到过这样的问题？ 谢谢