[SpamCop-List] Re: Semi-Port 25 blocking & 3rd party mail clients

[Garen Erdoisa]

POP wrote:
> This is the site that got me to thinking about this post:
>> http://rickconner.net/spamweb/tricks.html#bad-dns
> 
> Interesting site; not bad.
> 
> With the "sudden" proliferation of ISPs turning off port 25 for 
> all but their own traffic and rejecting any 3rd party initiated 
> mails, I wonder if we're not about to see a LOT more unique and 
> "clever" spam tricks in the coming months.
> [snip]
> What do you guys think?

Inquire of your ISP about roaming user service.

Such service would be provided normally to accommodate laptop users who 
travel but still need to be able to send and receive mail from anywhere.

When an ISP turns off port 25 service like that they should also provide 
an alternate port that uses authenticated SMTP. Either using SSL 
certificates, or using. SMTP LOGIN PLAIN over an encrypted SSL 
connection to the server.

Either of these methods should allow roaming users to send mail through 
their service.

If your ISP doesn't support such alternate authenticated SMTP service, 
then you may need to find a more competent ISP.

---
Garen