267857Re: Separate Submission Instance on Same IP as MX
- Aug 1, 2010On 08/01/2010 04:11 AM, Mike Morris wrote:
> Hi,Why ?
> I'm working on a mail server deployment that will only have one server
> for MX and SASL submission purposes. Generally I like to have separate
> Postfix instances to handle a specific task.
It's totally useless in this case.
SMTP runs on port 25, and rejects anything not_invented_here.
Submission runs on port 587, and requires SASL.
> In this case I'm runningIndeed.
> in to problems when the submission instance uses the same IP address as
> the MX instance. (Due to a limited IP address pool there is currently
> only one routable IP address assigned to this server.)
> Using the submission instance to send a message to a recipient address
> for which the server is also the MX host triggers Postfix' loop
> detection. Mail for foreign addresses is relayed correctly. I realize
> this can be done easily enough without using multiple instances.
> IsYou're going to have to do a lot better than "I want to do this".
> there a way to work around this so that an MX instance and submission
> instance can share single IP address?
Use a single instance, and save yourself some time.
> I've gotten used to the queue,Since submission is a separate transport, it does log separately.
> logging, and configuration separation provided by multiple instances and
> would rather like to use that approach here if I can.
> mail_version = 2.8-20100707UNSTABLE.
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