> We are primarily a web hosting company. Most of our customers use
> their ISP's smtp... It hasn't been a problem here, since we
> started in 1995.
In your case it isn't a problem. But, remember the poor company that has roaming
users. Is it OK for the CEO has to send mail as "[EMAIL PROTECTED]" instead of
[EMAIL PROTECTED]?
The idea was a good one (it makes it harder for spammers to use these ISPs). But...
> The major benefit of them limiting what servers the users can
> send mail through is that it keeps them from sending mail
> through a server that is an open mail relay.
True. But, many companies can't play this port 25 game, and *must* let their
employees access their mail server. The roaming employees with ISPs that don't offer
full Internet access (the ones blocking port 25) force the company to [1] Devote time
and money to making a hack to get around this problem, and [2] Making maintainance
more difficult (maintaining 2 ports instead of 1), and [3] making their server a bit
less secure.
Once the companies are forced to open other ports, the spammers are going to find
those ports. Now these ISPs are going to start blocking the SSL SMTP port, and ports
26 and 2525. Now, the small business is going to have to pick a random port to get
around this. Then, the spammers are going to start using port scanning tools, and
hacking more. That's not the best thing to happen.
The ISP is simply lowering their costs at the expense of the small business.
Also, we can add AT&T to the list of ISPs that play this game.
-Scott
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