I tested this twice on Exchange 2010 and came up with 1,245 (this is on SP3
plus a beta CU, but I doubt that the beta CU makes any differences).
These were all IPv4 addresses. I expect that IPv6 addresses would have a FAR
lower number.
I have some guesses as to what leads to this limit, but I'm not aware of a
specific documented boundary.
The script runs awhile (about 80 minutes in my test environment). But try it
yourself. In a test environment.
New-ReceiveConnector test-connector -Bindings "0.0.0.0:10000" -RemoteIpRanges
10.0.0.1
($script:start = get-date).ToString() + " beginning"
$connectorName = 'test-connector'
[int]$script:count = 0
[bool]$script:gotErr = $false
function add-it( [string] $network )
{
if( -not $script:gotErr )
{
for( $i = 1; $i -lt 254; $i++ )
{
"attempting $network.$i count =
$($script:count)"
$error.Clear()
$rc = Get-ReceiveConnector
$connectorName
$rc.RemoteIPRanges +=
"$network.$i"
Set-ReceiveConnector
$connectorName -RemoteIpRanges $rc.RemoteIPRanges
if( !$? -or $error.Count -ne 0 )
{
write-error
"failed adding entry $network.$i after $count"
$script:gotErr
= $true
break
}
$script:count++
}
}
}
add-it "10.0.1"
(get-date).ToString() + " done adding 10.0.1"
add-it "10.0.2"
(get-date).ToString() + " done adding 10.0.2"
add-it "10.0.3"
(get-date).ToString() + " done adding 10.0.3"
add-it "10.0.4"
(get-date).ToString() + " done adding 10.0.4"
add-it "10.0.5"
(get-date).ToString() + " done adding 10.0.5"
add-it "10.0.6"
(get-date).ToString() + " done adding 10.0.6"
"count = $($script:count)"
(get-date).ToString() + " Done."
($start).ToString() + " was start time"
Remove-ReceiveConnector 'test-connector' -confirm:$false
From: [email protected] [mailto:[email protected]] On
Behalf Of Tony Patton
Sent: Friday, February 7, 2014 6:14 AM
To: Exchange List
Subject: [Exchange] Exchange 2010 Receive connector RemoteIPRanges limit
Hi Folks,
What is the upper limit for the number of IPs/entries in RemoteIPRanges on a
receive connector?
In 2007 it was approx 1200, but I can't find a definitive answer for 2010.
I've tried the deity Google & Technet, but not finding anything relevant.
We are migrating an open relay from 2003 to 2010, at present there are approx
500 IPs that relay via it and we want to close it down.
I can reduce the list down to approx 250/300 by using subnets, but the
architect is saying that the limit is 100 which I really don't think is correct.
The environment is 4 x CAS/HT servers and the connector will be on all 4.
They are running Exchange 2010 SP2 CU5, but will be going to SP3 & latest CU
within the next month.
Thanks in advance,
Tony
