> Is there a way to make IMail listen on multiple ports for SMTP?
> Some ISP's block 25 (Earthlink) and I cannot get through, any
> other ideas for a workaround?
First is to suggest that your users get a real ISP that offers full Internet
access. Any ISP that blocks port 25 (and can't unblock it on request), no
matter how noble the intent, doesn't provide full Internet access. They
provide restricted, censored Internet access. For many people it is fine,
but for others (as you know) it is completely unacceptable. You shouldn't
have to play games on your mail server because of a few rotten Earthlink
customers. The flaw in Earthlink's theory of blocking port 25 is that many
legitimate customers will need to send mail using another server. Those
mail servers will open up ports other than 25, and then spammers will
eventually find them be able to use Earthlink to hijack the mail server.
Anyways, in real life, there's a good chance you can't get (or can't
suggest) your customers to switch ISPs. In that case, you could set up a
separate mail server that uses a different port. Or, there are SSL
tunnelling programs that would allow you to set up, for example, port 465 to
be an "SSL version" of port 25. Any connections to port 465 would use SSL,
but the SSL tunnelling software would connect internally to port 25. This
would allow users to connect to a different port on your server, but they
would have to use SSL. Most new mail clients allow SSL connections. There
will be some extra CPU overhead, though.
-Scott
Declude: Anti-spam and Anti-virus solutions for IMail.
http://www.declude.com
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