Question about multiple postfix instance, thank you very very much

[coofucoo zhang]

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I want to set up a postfix mail server which have many IP. Each of the

ip will work for one of my customer. So that is means my customer will

think that he has a dedicate mail server. But in fact all the mail

server are running on one real machine. I think I can use the multiple

instance feature to implement this requirement. So I setup 2 instance

for test. After that I find instance A(default instance) works good,

but instance B looks very strange.

 

First, smtp_dns_lookup not work. I set this parameter to "native" to

make sure postfix can use /etc/hosts file first. But for instance B,

it will use dns lookup first.

 

Second, the mydestination not work.

 

For instance, the mail root@..., if I sent it to

instance A, it will be received. But if i send to instance B, it will

not receive it, but start to lookup dns.

 

It is very strange, it is long time that I can not find any solution.

Does postfix support the way that I wish to do. I am not sure can you

 

Thanks very very much again.

coofucoo

[Sahil Tandon]

On Thu, 05 Nov 2009, coofucoo zhang wrote:

> I want to set up a postfix mail server which have many IP. Each of the
> ip will work for one of my customer. So that is means my customer will
> think that he has a dedicate mail server. But in fact all the mail
> server are running on one real machine. I think I can use the multiple
> instance feature to implement this requirement. So I setup 2 instance
> for test. After that I find instance A(default instance) works good,
> but instance B looks very strange.
>
> First, smtp_dns_lookup not work. I set this parameter to "native" to
> make sure postfix can use /etc/hosts file first. But for instance B,
> it will use dns lookup first.
>
> Second, the mydestination not work.
>
> For instance, the mail root@..., if I sent it to
> instance A, it will be received. But if i send to instance B, it will
> not receive it, but start to lookup dns.
>
> It is very strange, it is long time that I can not find any solution.
> Does postfix support the way that I wish to do. I am not sure can you

Your problem description is too vague and incomplete.  Please provide
more information as requested here:

 http://www.postfix.org/DEBUG_README.html#mail

In your next message, be sure to include the output of 'postconf -n',
any other changes to your master.cf files for each instance, and log
excerpts that relate to your problem(s).

--
Sahil Tandon <sahil@...>

[mouss-4]

coofucoo zhang a écrit :

>  
>
> I want to set up a postfix mail server which have many IP. Each of the
>
> ip will work for one of my customer. So that is means my customer will
>
> think that he has a dedicate mail server. But in fact all the mail
>
> server are running on one real machine. I think I can use the multiple
>
> instance feature to implement this requirement. So I setup 2 instance
>
> for test. After that I find instance A(default instance) works good,
>
> but instance B looks very strange.
>
>  
>
> First, smtp_dns_lookup not work. I set this parameter to "native" to
>
> make sure postfix can use /etc/hosts file first. But for instance B,
>
> it will use dns lookup first.
>
>  
>
> Second, the mydestination not work.
>
>  
>
> For instance, the mail root@...
> <mailto:root@...>, if I sent it to
>
> instance A, it will be received. But if i send to instance B, it will
>
> not receive it, but start to lookup dns.
>
>  
>
> It is very strange, it is long time that I can not find any solution.
>
> Does postfix support the way that I wish to do. I am not sure can you
>

yes, postfix does.
if you have a problem with one instance, show its config (the
corresponding 'postcon -n', ...) and relevant logs.

[coofucoo zhang]

Hi Mouss:
Thanks for your help. I have checked my main.cf, there are some small problem in it. So postfix does support this, just I make wrong setting. Thank you!

Best regrads!
Coofucoo

-----邮件原件-----
发件人: owner-postfix-users@... [mailto:owner-postfix-users@...] 代表 mouss
发送时间: 2009年11月6日 4:42
收件人: postfix-users@...
主题: Re: Question about multiple postfix instance, thank you very very much

coofucoo zhang a écrit :

>  
>
> I want to set up a postfix mail server which have many IP. Each of the
>
> ip will work for one of my customer. So that is means my customer will
>
> think that he has a dedicate mail server. But in fact all the mail
>
> server are running on one real machine. I think I can use the multiple
>
> instance feature to implement this requirement. So I setup 2 instance
>
> for test. After that I find instance A(default instance) works good,
>
> but instance B looks very strange.
>
>  
>
> First, smtp_dns_lookup not work. I set this parameter to "native" to
>
> make sure postfix can use /etc/hosts file first. But for instance B,
>
> it will use dns lookup first.
>
>  
>
> Second, the mydestination not work.
>
>  
>
> For instance, the mail root@...
> <mailto:root@...>, if I sent it to
>
> instance A, it will be received. But if i send to instance B, it will
>
> not receive it, but start to lookup dns.
>
>  
>
> It is very strange, it is long time that I can not find any solution.
>
> Does postfix support the way that I wish to do. I am not sure can you
>

yes, postfix does.
if you have a problem with one instance, show its config (the
corresponding 'postcon -n', ...) and relevant logs.

[Dan Schaefer-3]

coofucoo zhang wrote:

Hi Mouss:
Thanks for your help. I have checked my main.cf, there are some small problem in it. So postfix does support this, just I make wrong setting. Thank you!

Best regrads!
Coofucoo

-----邮件原件-----
发件人: owner-postfix-users@... [owner-postfix-users@...] 代表 mouss
发送时间: 2009年11月6日 4:42
收件人: postfix-users@...
主题: Re: Question about multiple postfix instance, thank you very very much

coofucoo zhang a écrit :
  

 

I want to set up a postfix mail server which have many IP. Each of the

ip will work for one of my customer. So that is means my customer will

think that he has a dedicate mail server. But in fact all the mail

server are running on one real machine. I think I can use the multiple

instance feature to implement this requirement. So I setup 2 instance

for test. After that I find instance A(default instance) works good,

but instance B looks very strange.

 

First, smtp_dns_lookup not work. I set this parameter to "native" to

make sure postfix can use /etc/hosts file first. But for instance B,

it will use dns lookup first.

 

Second, the mydestination not work.

 

For instance, the mail root@...
root@..., if I sent it to

instance A, it will be received. But if i send to instance B, it will

not receive it, but start to lookup dns.

 

It is very strange, it is long time that I can not find any solution.

Does postfix support the way that I wish to do. I am not sure can you

    

yes, postfix does.
if you have a problem with one instance, show its config (the
corresponding 'postcon -n', ...) and relevant logs.

  

If this is a new machine and not a lot has been done to it, you might want to consider virtual machines...