SuperGumby
Tue Jan 25 14:29:22 CST 2005
I'd keep ISA in the mix, but then, anyone who has regularly read me knows
that. The Linksys does not provide more than a fraction of the control and
reporting functionality offered by ISA.
so onto mail.
A number of steps are necessary.
1) Prepare Exchange to host mail for your domain.
1a) implement an Exchange aware anti-virus system.
1b) Include Exchange as part of your backup process.
2) Prepare ISA to accept traffic to Exchange (if you drop ISA but keep a two
NIC setup on the new box this changes to 'prepare RRAS NAT to accept traffic
to Exchange'. If you drop ISA there is little benefit, but there is some, in
running two NICs.)
3) Configure the router to forward SMTP to SBS.
4) Tell the world about it.
Steps one and two are performed by the SBS ICW (SBS2000) or CEICW (SBS2003).
Mind you, here I'm talking about making Exchange aware of your domain and
able to accept traffic, I'm assuming you're installed, patched, ready to
run. I hope you have some form of Exchange based virus scanning in place.
NTBackup in both SBS2000 and SBS2003 is Exchange aware, implementation is
slightly different on each.
I don't know the interface of the Linksys. If you keep a two NIC setup the
router forwards traffic on port 25 to the external SBS NIC, one NIC it
forwards to the internal address.
Telling the world about it should not happen till the server is known to be
accepting mail. You can test this through telnetting to your IP from
outside. We can find the specific commands if you don't know them.
Internet mail systems consult DNS to find out where mail should be
delivered. Mail delivery is contolled by an MX record in DNS. There can be
multiple MX records, or none. If no MX record exists delivery is attempted
to the A record for the domain. If MX records exist delivery is first
attempted to the server with the lowest weight. MX records point to A
records.
SO, you need your DNS host to create an A record for your public IP and an
MX record pointing to the A record.
A local ISP can serve as an example
Query: tpg.com.au. Query type: Any record
Recursive query: Yes Authoritative answer: Yes
Query time: 1140 ms. Server name: n/a
Answer:
tpg.com.au. 86400 SOA localhost.tpg.com.au.
dna.tpg.com.au.
2005012500 ; serial
10800 ; refresh (3 hours)
3600 ; retry (1 hour)
604800 ; expire (7 days)
172800 ; minimum (2 days)
tpg.com.au. 86400 NS dns2.tpgi.com.au.
tpg.com.au. 86400 NS dns1.tpgi.com.au.
tpg.com.au. 86400 A 203.12.160.34
tpg.com.au. 86400 MX 10 mx1.tpgi.com.au.
tpg.com.au. 86400 MX 100 mx2.tpgi.com.au.
tpg.com.au. 86400 TXT "v=spf1 ip4:203.12.160.0/24 ~all"
Additional:
dns1.tpgi.com.au. 86400 A 203.12.160.35
dns2.tpgi.com.au. 86400 A 203.12.160.36
mx1.tpgi.com.au. 86400 A 203.12.160.122
mx2.tpgi.com.au. 86400 A 203.12.160.123
You can see they have two MX entries, the '10' and '100' are the weight or
priority. Mail will first attempt delivery to mx1.tpgi.com.au and if it is
not available will try mx2.tpgi.com.au. In this case MX2 will hold the mail
until MX1 becomes available. The additional entry is optional but desirable.
"PM" <PM@discussions.microsoft.com> wrote in message
news:895568C9-812C-4506-81CB-6094BDF63BC1@microsoft.com...
> Right now, it is a dual-nic setup (ISA SERVER). The new server has 2 nics
> too, but I am thinking of not using ISA and just using our router to
> handle
> NAT. Does that sound OK?
>
> Yes - There is a Linksys VPN router.
>
> Static IP Address.
>
> Thanks for the site link - I'll check it out.
>
> Any other info you can offer? I really appreciate your help.
>
> P
>
> "SuperGumby [SBS MVP]" wrote:
>
>> single or dual NIC setup?
>> router involved?
>> Static or dynamic IP on your internet connection?
>>
>> more importantly at this stage, I think, is how you intend to move from
>> SBS2000 to SBS2003. What process do you intend to use and are you aware
>> of
>> www.sbsmigration.com?
>>
>> "PM" <PM@discussions.microsoft.com> wrote in message
>> news:130A5FBF-52FF-4F55-ADD6-2CD8AD694CAD@microsoft.com...
>> > Our organization currently uses POP3 e-mail, and the e-mail is stored
>> > in a
>> > Microsoft Exchange mail store. Under Tools / E-Mail Accounts, you
>> > can
>> > see
>> > two accounts - mail.company.com (our POP3 mail that is hosted by our
>> > ISP),
>> > and Microsoft Exchange Server. The POP3 mail is the default. The
>> > server
>> > is
>> > SBS 2000.
>> >
>> > I have ordered a 2003 Server with Exchange 2003. I'd like to move our
>> > e-mail to be hosted by our new server. We have the domain registered,
>> > but
>> > I
>> > guess DNS is pointing to our ISP right now.
>> >
>> > I am unsure exactly what to do to move our mail in-house. Does anyone
>> > know
>> > the steps, or can anyone point me in the right direction?
>> >
>> > Thanks
>> > P
>>
>>
>>