RE: Error from yahoo: wasn't able to establish an SMTP connection. (#4.4.1)
- From: "John Tolmachoff \(Lists\)" <johnlist@xxxxxxxxxxxxxxxxxxx>
- To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
- Date: Wed, 7 Apr 2004 11:59:34 -0700
1. The problem appears to be the firewall.
2. The "firewall" included with the Linksys products is not designed for
hosting. It is designed and marketed to protect the LAN.
3. Yes, everyone has a limited budget. So why start with the Cadillac of
e-mail servers on the inside and get but on the security.
4. Like I said, ICF in Windows XP and Windows 2003 Server (still trying to
find the logic in including it in the server product) are not designed for
hosting. That is probably a big part of the problem.
With out knowing the configuration of the Linksys firewall or ICF on the SBS
server, I can not tell you what is wrong, but that is where you should look.
John Tolmachoff
Engineer/Consultant/Owner
eServices For You
-----Original Message-----
From: Mark M. Friedman [mailto:mark@xxxxxxxxxxxxxxxx]
Sent: Wednesday, April 07, 2004 9:55 AM
To: [ExchangeList]
Subject: [exchangelist] RE: Error from yahoo: wasn't able to establish an
SMTP connection. (#4.4.1)
http://www.MSExchange.org/
1. John I appreciate your concern but it is a VERY temporary solution for
the moment, I do plan on getting a reliable firewall for all locations but
you also have to realize that some of these sites are on a limited budget
and sometimes you have to do what you can, and kinda "McGuyver" it. Besides
the Linksys has a "builtin" firewall. Anyways aside from the secuirty
issues what could possibly be prohibitong yahoo email from arriving to these
clients?
_____
From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx]
Sent: Wednesday, April 07, 2004 11:04 AM
To: [ExchangeList]
Subject: [exchangelist] RE: Error from yahoo: wasn't able to establish an
SMTP connection. (#4.4.1)
http://www.MSExchange.org/
Oh brother. You do not know what you are doing, do you?
1. If you are using the included Internet Connection Firewall that comes
with Windows XP and Windows 2003 server, you do not understand. You CAN NOT
USE THAT! That is a basic basic basic dumb firewall that is only a stop gap
measure.
2. Generally speaking, (unless you purchased the cheap version,) ISA 2000 is
included with Small Buisness Server 2003.
3. You are using a Linksys (what, DSL,) basic router that is not a firewall.
Some one needs to take some time and think about security.
Operating an Exchange e-mail server, or any flavor of e-mail server on the
Internet, REQUIRES dedication and understanding of the ramifications of
doing so. This includes taking basic standard security steps at the very
least.
For the Exchange server on SBS, disable the ICF and configure ISA server and
publish the Exchange server properly.
On the other client behind the Linksys, 86 the Linksys router, break down
and get a SonicWall TZ170 and configure the SMTP and POP3 protocols.
John Tolmachoff
Engineer/Consultant/Owner
eServices For You
-----Original Message-----
From: Mark M. Friedman [mailto:mark@xxxxxxxxxxxxxxxx]
Sent: Wednesday, April 07, 2004 1:23 AM
To: [ExchangeList]
Subject: [exchangelist] RE: Error from yahoo: wasn't able to establish an
SMTP connection. (#4.4.1)
http://www.MSExchange.org/
One is Win2k3 small biz srvr (Not ISA) built in firewall and the other
client has a basic linksys setup.
_____
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Windows Security Resource Site: http://www.windowsecurity.com/
Network Security Library: http://www.secinf.net/
Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com
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Other Internet Software Marketing Sites:
Leading Network Software Directory: http://www.serverfiles.com
No.1 ISA Server Resource Site: http://www.isaserver.org
Windows Security Resource Site: http://www.windowsecurity.com/
Network Security Library: http://www.secinf.net/
Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com
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