Re: Relaying email to exchange
- Am 15.02.2013 01:30, schrieb Simon Walter:
> On 02/15/2013 06:10 AM, Reindl Harald wrote:in this case the setup sould be done by people which are
>> no need for two MX records at all
> I think perhaps that is a bit of hasty advice. I'm quite sure given a large enough infrastructure and traffic load
> that you'd want two or more MX records with a different SMTP server sitting behind each IP address. I could (and
> have been) wrong though.
knowing what they are doing and you have unlikely a
exchange as MX
having two MX and only one of them filters spam is dumb
the two MX must behave identical from outside
On 02/14/2013 09:41 PM, Kevin Blackwell wrote:
> I have 2 mx records. The primary is Exchanges edge server that has it's
> own internal spam filtering. The secondary is poxtfix server relaying
> mail to the edge server as a backup mx record. Are you saying the
> postfix server should be behind the Exchange edge server?
A rule of thumb is that if you must have a backup MX you should have the
same spam defence as on the primary one.
If you can't do that, I suggest you drop the backup MX.
Alternatively you can hide the exchange behind a postfix, but the you
should let postfix do the spam filtering and disable spam filter on the
You must now ask you the question why you need a backup MX.