I got a problem when I sent email on Window Mail

[Khoacolson]

Error 1: "Subject 'Fw: Bao gia banh xe PU 150- Kinh goi Anh Chanh Cong ty
vat tu cong nghiep Ha Noi', Account: 'khoa.le', Server: '221.132.39.166',
Protocol: SMTP, Server Response: '552 we don't accept email with this MIME
content (#5.3.4)', Port: 25, Secure(SSL): No, Server Error: 552, Error
Number: 0x800CCC6D"

Error 2 : "Your server has unexpectedly terminated the connection. Possible
causes for this include server problems, network problems, or a long period
of inactivity. Subject 'Bao gia banh xe PU 150- Kinh goi Anh Chanh Cong ty
vat tu cong nghiep Ha Noi', Account: 'khoa.le', Server: '221.132.39.166',
Protocol: SMTP, Port: 25, Secure(SSL): No, Error Number: 0x800CCC0F'

Dear Sir,

There are two error messages that WM gives when sending fails. Please help
me advice to solve these problem.

The error appeared when I sent the email with a attached software, After
this email I can not send email , but receive task is ok

Thank you very much,

Khoacolson

 

[Gary VanderMolen]

Let me address Error 2 first, since it is easier to diagnose.
"Unexpectedly terminated" is usually caused by interference from an
antivirus program. Which antivirus are you running?
As a minimum, email scanning in the antivirus should be turned off,
although that may not be sufficient to eliminate all bad effects.
In a worst case scenario, your antivirus may need to be uninstalled.

Email scanning in any antivirus should be disabled, for reasons
explained here:
http://thundercloud.net/infoave/tutorials/email-scanning/index.htm

If no improvement after disabling email scanning, consider upgrading
to Windows Live Mail, because it is less prone to suffering bad effects
from overly intrusive antivirus programs:
http://download.live.com/wlmail

Error 1 may go away after the Error 2 issue is fixed.