545990 - Can't Send mail (same problem with a mac, Vista, two diff smtp)

Status: RESOLVED INCOMPLETE

(Thunderbird :: General, defect)

Description

[roger]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.7) Gecko/20100111 Thunderbird/3.0.1

When we send a letter we get:

> An error occurred while sending mail. The mail server responded:<   @telus.net> No such user here. Please check the message recipient   @telus.net and try again.
 Then we get:

Sending of message failed.
The message could not be sent because the connection to SMTP server mail.*****.net (or Shawmail)was lost in the middle of the transaction. Try again or contact your network administrator.

This may be from the ISP or a virus, but I think it is from Thunderbird

P.S. Everything has been working fine for a while - no recent system changes to look at
Thanks

Reproducible: Always

Steps to Reproduce:
1.Write a letter (this won't happen to all mail - but is does happen to addresses I have used before)
2.Hit Send
3.

Comment 1

[Matthias Versen [:Matti]]

Do you get an error popup from TB or is this error message from a mail ?

>The mail server responded:
<   @telus.net> No such user here. Please check the message recipient

That error message from the server means : You try to send a mail to a user at the Domain @telus.net but the user is unkown.
Do you try to send a mail to someone @telus.net ?

Comment 2

[Wayne Mery (:wsmwk)]

lacks response to Matti