Urg to kill...rising... "Dude", you apparently don't understand what I am talking about.
Urg to kill...fading...rising!...fading... > Dude, I don't know who you are but you are wrong. > > All SMTP servers must accept anonymous connections, otherwise no one on = > the Internet would be able to send mail to each other. > > Also Exchange perfectly understands the difference between inbound mail = > and a relay situation. When you restrict relay to "Allow all computers = > which successfully authenticate to relay mail", POP3 users will still be = > able to send inbound mail to their colleagues within the same Exchange = > organization from anywhere in the world without having to use SMTP = > authentication. But they will not be able to send mail to someone = > outside of the Exchange org unless they authenticate. > > But who is going to go to an Internet caf=E9 and configure a POP3 = > client? > > I'd rather use OWA. That thing will sure work great from any client = > anywhere in the world. > > Sincerely, > > Andrey Fyodorov. Exchange MVP > Systems Engineer > Messaging and Collaboration > Spherion > > -----Original Message----- > From: Greg Deckler [mailto:[EMAIL PROTECTED] > Sent: Friday, December 12, 2003 11:30 AM > To: Exchange Discussions > Subject: RE: Mail Processing by Exchange vs. SendMail > > While I am not sure that the "Greg" in this post was directed at me or > whether this is some new form of abuse and sarcasm, it is pretty much > irrelevant as I do have some things to say on this issue. > > The biggest problem that I have had with Exchange on the outside of the > SMTP mail chain is anti-spam in a small office environment. It is not = > that > anti-spam functionality does not exist in Exchange, but it is in its > native implementation. The issue actually revolves around POP3 users. = > For > your Exchange server to serve as the end-point for SMTP connections from > anywhere, you generally have to turn on Anonymous Authentication. This > allows any SMTP server to connect to yours to send email. Now, let's say > you have POP3 users that might be connecting from anywhere they please = > on > just about anyone's network. To allow these people to send email, you = > have > to generally turn go into Relay Restrictions and turn on "Allow all > computers which successfully authenticate to relay..." The problem with > this is that Anonymous Authentication is also on, so guess what? = > Spammers > can anonymously authenticate and relay spam, because, apparently in the > Microsoft world Anonymous Authentication is just as good as any other > Authentication. Oh well. And yes, you can turn this checkbox off and set > up specific computers, but if they are POP3 clients connecting from > anywhere, you are hosed there and if you set up this by domain, you have = > a > whole other set of problems, not the least of which is that this forces = > a > reverse DNS lookup. > > What really needs to happen with this is that Microsoft needs to simply > add a checkbox that says something along the lines of "Anonymous > Authentication can only send inbound messages and not relay." But, I = > guess > since I am not an MVP the likelihood of this happening is close to zero. > > In terms of speed, I do not have hard numbers, but if you buddy is = > making > rash statements like you indicate, he or she does not either. Tell your > buddy to show you the proof or jump off a pier. You may want to be a > little more PC. I have only seen an Exchange server's SMTP mail engine > under duress when a spammer was involved and we are talking ungodly > amounts of messages with lots of failures and retries. > > In terms of having Exchange exposed to the outside world, you can secure > it, put it in a DMZ and make it a front-end server. Again, the main = > issue > I have is with anti-spam in specific situations but if you don't have to > worry about POP3 users or have an extra box to point POP3 users to, then > you're good to go. > > Finally, I will point out that *technically* you do not even need = > Exchange > as the SMTP engine is built into Windows 2000/2003 and I have played > around with using this to serve as a host to forward SMTP mail into my > Exchange environment. It's been awhile since I really sat down with it, > but if memory serves it worked just fine. > > > > Greg, would you please help with this discussion on SendMail....Your = > input will be highly regarded....Thanks > >=20 > > Tell him Postfix is more secure... :P > > >=20 > > > Personally, I like to put another server at the edge for SMTP that = > is NOT > > > Exchange when I can... > > >=20 > > > As far as who's faster at processing... Who cares, can Sendmail do > > > calendaring, public folders, etc?=20 > > >=20 > > > -----Original Message----- > > > From: Sean Faust [mailto:[EMAIL PROTECTED] > > > Sent: Friday, December 12, 2003 9:20 AM > > > To: Exchange Discussions > > > Subject: Mail Processing by Exchange vs. SendMail > > >=20 > > > Good Morning All, > > >=20 > > > I have a Unix/Linux admin that is just wearing me out with regards = > to > > > Exchanging being 3rd rate. Given all of the variables including = > memory, > > > processors, etc. How much mail traffic can Exchange process in an = > hour/day > > > and what is the advantage if any of putting SendMail in front of = > Exchange? > > >=20 > > > His last statement was that SendMail can process more mail in one = > minute > > > than Exchagne can process in a day. > > >=20 > > > Thanks, > > >=20 > > > Sean > > >=20 > > > _________________________________________________________________ > > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > > Web Interface: > > > = > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=3Dexchange&text_mode=3D= > &lang > > > =3Denglish > > > To unsubscribe: mailto:[EMAIL PROTECTED] > > > Exchange List admin: [EMAIL PROTECTED] > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: = > http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=3Dexchange&text_mode=3D= > &lang=3Denglish > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
