Problem sending E-Mail

[maltaron]

I have an Advent laptop with XP. Suddenly it has decided not to send E-Mail, receive is OK. When I try to send it throws up an error message thus:

Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Subject 'Fw: thanks', Account: 'mail.btinternet.com', Server: 'mail.btinternet.com', Protocol: SMTP, Server Response: '451 See http://pobox.com/~djb/docs/smtplf.html.', Port: 25, Secure(SSL): No, Server Error: 451, Error Number: 0x800CCC0F

The computer was switched off and disconnected from mains over Xmas and on restart had lost its Cmos settings, whether this is relevant I do not know.

Any help will be appreciated. TIA

 

[2scoops0406]

No, it's at BT's end, I've had this, good luck phoning BT support, you'll need it.

 

[maltaron]

Thanks for your reply. This is not a BT problem, another laptop running on the same wireless modem is OK

 

[2scoops0406]

Is it the same email account?

 

[maltaron]

Yes it is the same account, however, I have just discovered that text e-mails send OK, Its e-mails with pictures attached that will not go.

 

[2scoops0406]

Ok, then rather than do it to death myself, just put 0x800CCC0F into google it'll throw out loads of stuff, usually about SMTP authentication.

 

[maltaron]

Thanks for all the help, it seems the problem was trying to send a too large file.

 

[2scoops0406]

8) Glad you're sorted.