SMTP Send Exception: Error: command not implemented

[Jaiyan]

Hi guys,

I'm doing my first bit of work with SMTP in .NET, more specifically I've written an email program that uses SMTP to send an email to my brother's band's mailing list.

I've had my MailMessage code checked by experts so I know that the email construction is fine; however whenever I try to send an email I get the message:

System.Net.Mail.SmtpException was unhandled
Message="Command not implemented. The server response was: Error: command not implemented"

I assume that this is the SMTP server rejecting the call; however can anyone think of anything that I need to do or install that I'm missing, before I speak to my ISP?

It's not my own SMTP server that I'm using - I'm using the address of my ISP's SMTP server (the one I use for Outlook email) - and I know that they're not strict on email usage as they're happy to allow people to run SMTP servers at home if they wish.

So is there anything that anyone can think of that I'm missing, no matter how obvious?

Thankyou,

Lloyd

 

[litton1]

can you use telnet to perform the desired operation?

Age is a consequence of experience

 

[Jaiyan]

Hi, thanks for your response.

I haven't tried Telnet yet in my app, so I'll read up on it and give it a try. Thanks.