Outgoing SMTP Servers

Owen DeLong owen at delong.com
Wed Oct 26 04:44:11 UTC 2011

On Oct 25, 2011, at 9:33 PM, William Herrin wrote:

> On Tue, Oct 25, 2011 at 8:15 PM, Owen DeLong <owen at delong.com> wrote:
>> On Oct 25, 2011, at 3:16 PM, William Herrin wrote:
>>> If you're doing the "right" thing, sending email via encrypted,
>>> authenticated mechanisms, then you're doing it TCP ports 587 or 443.
>>> Where Mike's mechanism obstructs you not at all.
>> Depends. Some hotel admins aren't so bright. That's the problem. Not
>> everyone hears block outbound SMTP on port 25, they hear block outbound
>> SMTP and stop listening. Boom, 25, 465, 587 all get turned off.
> Sure. But that's not Mike's mechanism. It's ignorant hotel guy's
> mechanism. Don't penalize Mike because some other fool does something
> similar but wrong.
Mike recommends a tactic that leads to idiot hotel admins doing bad things.
You bet I'll criticize it for that.

His mechanism breaks things anyway. I'll criticize it for that too.

>>> If you're still doing the wrong thing, trying to talk to remote SMTP
>>> servers on TCP port 25, why should his mechanisms not punish you?
>> It's not wrong to talk to them on port 25. It's wrong to allow unauthenticated
>> remote users to send on your own port 25 for relay purposes.
> Sure it is. Same way it's wrong to have an open relay or an unsecured
> proxy. It isn't 1995 any more.

As I said, we can agree to disagree about what is wrong. I know your position.
I still don't agree with it.


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