[Mono-dev] SmtpClient only supports ESMTP?

[Michael J. Ryan]

Look into OpenSmtp .Net <http://sourceforge.net/projects/opensmtp-net/>

It's worked for everywhere I've wanted to use it so far... though I haven't 
tested it under mono...  I supports a couple smtp authentication methods as 
well, if you need to use it with a more locked down server.

This is the best smtp component I've ever used, to be honest.. there isn't a 
built in caching system though (if you need to queue a lot of bulk messages). 
  However attachment and text/plain + text/html support is very good.

LGPL licensed for redistribution, and pretty easy to create a wrapper if you 
want to expose it via COM.

Mads Bondo Dydensborg wrote:
> Regrettable I "crashed" into a smtp server today, that does not support ESMTP, 
> but only SMTP (some old kind of exchange server, I think).
> 
> It seems that System.Net.Mail.SmtpClient only supports ESMTP - is this true? 
> Any plans for supporting SMTP also?

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