> Right. But like I said, why would a ADSL line be inferiour? For most > businesses the employees need download capacity to browse the > net. The > upload bandwith can be a lot less. Overhere a "basic ADSL" > line is now > 3200K/768K for just 60 euro's a month. A "Fast ADSL" line is > 8M/1M for just > 80 euros a month. Considering a T1 line is LESS than that .......
Bonno, I have no clue as to what ADSL is like overseas. I target known North American IP ranges, personally. If you are asking what makes ADSL inferior to other technologies, you are in for a long debate. Suffice to say, there is a good reason why ADSL is so cheap, and other technologies cost more. Pricing certainly is not arbitrary. Also, in North America, ADSL is traditionally marketed towards residential customers, with little or no SLAs, poor support and a general lack of prefessionality from most "local" telephone companies and cable cos. They will provide little or no support to those wishing to use their ADSL circuit as a mail server, and completely block all port 25 access to many (the majority?) of most of their customers. ADSL is basically regarded as one small step-up from dial-up here. I wouldn't doubt that things may be different there though. You also have to realize that the reason we are targeting ADSL lines in North America with IP-based RDNS addresses is simply because 99.9%+ of the e-mail coming from those addresses is spam. For all of those who keep arguing that we are "dicriminating" against a different "class" of users, would you please stop the FUD and get the point that those who block these addresses are NOT doing so because we care what kind of connection people have. That is an ENTIRELY separate debate. What we are talking about here is CAUSE AND EFFECT. CAUSE - ADSL lines are much cheaper than any other type of circuit, and the vast majority of its users are unknowledgeable home PC users. It is primarily aimed at residential accounts. EFFECT - 99.9%+ of the e-mail that comes directly from North American ADSL circuits with IP-based RDNS entries is spam. Using ADSL to run a business mail server exposes you to the same risks of being blocked that those who sign-up for service with hosting companies that are known spammers will have. ISP blocking has nothing to do with class of service or money spent. It has to do with the percentage of spew coming from those types of addresses. Period. Its just like blocking using a IP range known to be infested by spammers. It is effective, and has had little downside for us. If you lie with dogs, you're going to get fleas. If you choose to use an ADSL circuit with an IP-based, dynamic-looking RDNS on a block known to contain ADSL users, you are going to get mail blocked. That is just a fact of life. William Van Hefner Network Administrator Vantek Communications, Inc. > > Could they opt to spend more money on data lines, yes. Could they > > achieve their collaboration/integration needs in other ways without > > needing an internal mail server, yes. Do these other possibilities > > mean that the business should be forced to do so, no. > > Right, these lines are sold ALLWAYS with a static IP and the SLA > specifically states one is allowed to run a server of that > line. Overhere > there are SDSL lines which use a different IP space but ALL > ADSL lines, > whether they are bussiness or consumer share the same IP > space as there is > no difference. > > > If the reliability of the DSL/cable line (or multiple lines for > > redundancy in some cases) meets their needs, it would not > be smart as > > a business to spend more money just because a particular > email admin > > somewhere in the world decides to start blocking all mail > from static > > IP DSL/cable subscribers. The fact that there is no > consensus in this > > discussion bears testament to the fact that T1 lines or > better are not > > a de facto standard for email server connectivity. > > T1 lines are great if one has A LOT of outgoing trafic, like > we have at our > main site but ALL OTHER sites needs just a lot of download > bandwith and some > upload bandwith. A ADSL line is just that so why pay for > something else we > don't need nor want? > > > > Bottom line is businesses have to make budgetary decisions > like this > > based on technical merit and financial feasability. They would be > > foolish to spend more than necessary to meet their needs. > From that > > perspective, business class DSL/cable should be considered viable > > connectivity solutions. > > Right. I could not agrree more. As a matter of fact I would > get into trouble > with out management if I were to start using expensive > connections to the > internet just because someone else assumes all mail from an > IP space which > also contains consumer connections should be blocked. Of > course *I* have an > option, all mail goes through our corporate mailserver which > is at our main > site that now has a 100Mbit connection, no xDSL line ;-), but > not everyone > has that option. > > Groetjes, > > > Bonno Bloksma > > --- > [E-mail scanned at tio.nl for viruses by Declude Virus] > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
