[ExchangeList] Re: use dynamic ip address for mail server
- From: "Ara Avvali" <Ara.Avvali@xxxxxxxxxxxxx>
- To: <exchangelist@xxxxxxxxxxxxx>
- Date: Tue, 3 Oct 2006 14:16:26 -0700
1. Yes I got that. Dynamic IP is more trouble than I thought.
Client is already convinced that this is not a good idea
2. got that too
3. The question had nothing to do with the quality of firewall or
anti spam solution. Don't mix things up
4. I know that already
________________________________
From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of John T (Lists)
Sent: Tuesday, October 03, 2006 2:02 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: use dynamic ip address for mail server
Importance: High
http://www.dnsreport.com/tools/dnsreport.ch?domain=Faranheit.com
1. As some one else has posted, you MUST have a correct REVDNS record
for the IP address. This means you have to have a static IP address. If
you can not afford a static IP address, you should look into using a 3rd
party as your MX gateway. Many anti-spam filter systems will add weight
to a REVDNS that is a plain Jane DSL or cable REVDNS record so even if
your dynamic IP has a REVDNS, it will be considered correct and it will
show that it is dynamic and it will be counted against you.
2. CNAME's are not allowed when it comes to email servers! Period. End
of story.
3. A Linksys router is not a firewall no matter who tells you what. You
must have a properly configured firewall in front of your email server
or it will be hacked and/or used for reverse DOS attacks and/or flooded
with incoming spam and virus laden email and/or subject to DOS attacks.
4. Bringing up an email server on the internet is no light subject and
must be handled with extreme caution and due diligence in both
configuration and protection.
My recommendation, truthfully: Contact a third party to be your MX
gateway and only except email from that company and even better only
send outgoing email through that company by way of smart host
configuration.
Yes, I provide those services but I do not care so much as who you use
but rather use some one as your gateway.
John T
eServices For You
"Seek, and ye shall find!"
-----Original Message-----
From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Ara Avvali
Sent: Tuesday, October 03, 2006 11:39 AM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: use dynamic ip address for mail server
Faranheit.com
________________________________
From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Howard Rappaport
Sent: Tuesday, October 03, 2006 11:35 AM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: use dynamic ip address for mail server
Should work; what is the domain?
From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Ara Avvali
Sent: Tuesday, October 03, 2006 2:22 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] use dynamic ip address for mail server
Greetings,
We want to host a mail server at a DSL line which is dynamic. Getting
static will cost a lot of money at the location so we got a linksys
router that support dyndns.org and created a record for
domain.dyndns.org. Put the router in front of mail server and forwarded
tcp 25 to mail server. Then we create a CNAME in DNS server that
mail.domain.com points to domain.dyndns.org. Then there is an MX record
with 10 priority mail.domain.com.
Would this work? It is almost 24 hours and dnsreport still says there is
no proper mx record configured.
I appreciate any help on this one
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