Jonathan,
Customers don't have just one email address, they have a private one (maybe several) and some from the company. Then they are changing the location from home to the office an back with their notebook. Maybe their mail provider is not the same as the internet service provider. So they want to use the mail server from their mail provider (With authentication of course)
You cannot really expect, that they reconfigure the mail client every time they change the location. (But there is still Port 587!)
Radek
-----Ursprüngliche Nachricht----- Von: swinog-bounces@lists.swinog.ch [mailto:swinog-bounces@lists.swinog.ch] Im Auftrag von jonathan Gesendet: Mittwoch, 11. April 2007 15:31 An: swinog@swinog.ch Betreff: Re: [swinog] Re: blocking ports?
Sorry but I disagree with Per. ISPs have a duty to prevent email Spam which is a terrible curse for us all. If they decide that blocking port 25 outbound will help then they should do it.
If you are a user, why can't you use the ISPs relay server? If you are a provider you ought to have your own mail server on a fixed IP address.
Of course, one day we need a better protocol than SMTP (*Simple* Mail Transfer Protocol) which was never meant as a global email solution. But until then we have to do something to stop people abusing it.
Just my 2p worth
Jonathan Safe Host Geneva
Per Jessen wrote:
Scott Weeks wrote:
---------From: Jeroen Massar jeroen@unfix.org------------- : To avoid problems there, make a simple policy: if found : spreading a virus/spamming and having disabled the blockage: : no Internet for a week. Or a similar measure that can of : course be lifted after paying a fine.
Wouldn't that make customers go to another comany for service?
Most probably. About three years ago, prior to us becoming a service provider ourselves, we were "just" a customer, and had to sack our provider when they decided to reduce their service by blocking port 25.
Personally, I believe any and all restrictions on an internet connection must be be very clearly and very obviously stated in the product/ service description, and that is something many ISPs neglect to do.
/Per
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