Question for the Experts

[Mike Kercher]

Give Server A it's own IP address and firewall that single IP to accept
SMTP from Server B only.  Then, you can allow all SMTP to the other IP
address(es) on Server A.

Mike
 

-----Original Message-----
From: mailscanner-bounces at lists.mailscanner.info
[mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Kevin
MURPHY
Sent: Thursday, February 14, 2008 10:58 AM
To: 'MailScanner discussion'
Subject: RE: Question for the Experts

Yeah that's the scenario.

-----Original Message-----
From: mailscanner-bounces at lists.mailscanner.info
[mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Brendan
Pirie
Sent: 14 February 2008 16:45
To: MailScanner discussion
Subject: Re: Question for the Experts

Are you saying ServerA is no longer the MX for this particular domain,
but it is still the MX for several other domains?

Brendan Pirie
Manager of Information Technology
Randolph-Macon Academy
bpirie at rma.edu

Kevin MURPHY wrote:
> Hi Brendan
> I cannot firewall port 25, as it receives mail for many other Domains.
> Thanks
> 
> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of 
> Brendan Pirie
> Sent: 14 February 2008 16:10
> To: MailScanner discussion
> Subject: Re: Question for the Experts
> 
> I just went through a similar process here.  I firewalled port 25 on 
> ServerA so ServerA could only receive email from ServerB.
> 
> Brendan Pirie
> Manager of Information Technology
> Randolph-Macon Academy
> bpirie at rma.edu
> 
> Kevin MURPHY wrote:
>> Dear all
>>
>>  
>>
>> I recently made some changes to a domains mx record. It use to be, mx

>> = serverA, which relays clean mail to Exchange Server
>>
>> Because this domain was really getting hammered, I moved it to a more

>> powerful spam filtering server.
>>
>> MX Record is now ServerB, which fwds clean mail to ServerA, which 
>> relays it to the Exchange Server.
>>
>>  
>>
>> My Problem now is that some spammers are still sending mail direct to

>> my ServerA for this Domain.
>>
>>  
>>
>> So I am looking at a way to configure the ServerA, so it only excepts

>> mail for this domain if it comes from server (The more powerful one) 
>> So it drops the spammers on ServerA
>>
>>  
>>
>> Thanks
>>
>>  
>>
>> Kevin **
>>
>>  
>>
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> 

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