email.net and ISP relay blocks

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Vetrijar

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Sep 1, 2003
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Location
Texas
With Visual Basic.NET, I'm wanting to create a small email program that simply sends/receives emails and attachments like Outlook Express or such.

Doesn't have to be fancy.

My problem is with this darn relay stuff with ISPs. Is there a way to create an email program (not a web browser site) that lets me send and receive

emails with attachments to people? I have a web provider that lets me use my own smtp with them, but my current ISP just recently blocked

relayed emails because of junk mail people. This program I want to make would run like the MSN or Yahoo style emails, but be windows based.


Is that possible? Anyone know how to do this and get past the relay stuff?


Ryan
 
When you connect to the remote server, just before you send your email info. You have to AUTH to the server, to tell it that your authorised to send these emails. I dont know exact code, as I use a different third part object to do mine. Theres a few examples about im sure.
 
Doesn't work. Here's the sample from Outlook Express that I get


The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was 'cs1@vivitar.com'. Subject 'Question with Flash 2000 product', Account: 'pop.central.cox.net', Server: 'smtp.central.cox.net', Protocol: SMTP, Server Response: '550 relaying mail to vivitar.com is not allowed', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79



Only way around this right now is going to a webmail.
Isn't there a way to try programming this in a windows app to bypass errors like this?
 
Is the e-mail address you are sending from 'owned' by the ISP? If not most servers will accept mail from external accounts to internal accounts and vice-versa but very few (no good ISPs anyway) will deliberately allow an external account to relay to another external account
 
Yes, that email address is owned by my ISP, cox.net

For some reason, I can only send mail to another cox.net member.
I called the company twice and they can't figure what's going on.

The message reads as if I'm trying to bypass cox.net and use the recipient's ISP as the external server.
 
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