content_filter and transport_map on outgoing mail interaction
Hi there,
We have a transport map setup so that mail destined for the local domain
or from some subdomain email servers is not routed to our relay gateway.
These entries have a null gateway set. Mail destined for all other
domains is routed via our relay.
e.g
serve...@server01.abc.co.za :
ad...@dms.abc.co.za :
abc.co.za :
* smtp:relay.xyz.co.za
We need to apply a content_filter to all outgoing mail. To do this we
have set up two smtp processes in master.cf
192.168.10.73:smtp inet n - - - - smtpd
192.168.10.72:smtp inet n - - - - smtpd
-o content_filter=dfilt:
dfilt unix- n n - - pipe
flags=Rq user=filter argv=/etc/postfix/postfix_filter.sh -f
${sender} -- ${recipient}
this is for the altermime script. In main.cf we have set up
smtp_bind_address = 192.168.10.72
The problem is it appears the transport map simply by passes the
outgoing smtp server settings as defined in main.cf and with
smtp_bind_address. I have tried editing the transport map to force it to
use the 192.168.10.72:smtp service but this doesn't work. How can I get
this to work? i.e route outgoing mail to a specific gateway via
transport maps but still apply a content filter to outgoing mail?
thanks
Re: content_filter and transport_map on outgoing mail interaction
On Thu, Sep 10, 2015 at 06:12:44PM +0200, Mark Clarke wrote:
> We need to apply a content_filter to all outgoing mail. To do this we have
> set up two smtp processes in master.cf
>
> 192.168.10.73:smtp inet n - - - - smtpd
> 192.168.10.72:smtp inet n - - - - smtpd
>-o content_filter=dfilt:
These are Postfix SMTP servers (accept incoming mail).
> dfilt unix- n n - - pipe
> flags=Rq user=filter argv=/etc/postfix/postfix_filter.sh -f ${sender} --
> ${recipient}
>
>
> this is for the altermime script. In main.cf we have set up
>
> smtp_bind_address = 192.168.10.72
This is a configuration parameter of the SMTP client (sends outgoing
mail). It has nothing to do with which SMTP service mail will be
sent to.
> The problem is it appears the transport map simply by passes the outgoing
> smtp server settings as defined in main.cf and with smtp_bind_address.
There's no bypass, you're simply confused.
> I have tried editing the transport map to force it to use the
> 192.168.10.72:smtp service but this doesn't work.
To send to that service, you'd make the transport:
smtp:[192.168.10.72]
but that will almost certainly create a mai loop.
> How can I get this to
> work? i.e route outgoing mail to a specific gateway via transport maps but
> still apply a content filter to outgoing mail?
That's what Postfix does. It first applies content filters, and
then once the mail is re-injected into queue (by a mechanism that
does set a content_filter) uses the transport table.
You're just confused.
--
Viktor.
Re: content_filter and transport_map on outgoing mail interaction
Ok, figured it out. Read up more on the postfix architecture and
confirmed that it should work as the content_filter will run on the mail
once it has been received and before it is delivered via smtp to its
destination. The issue was that I am submitting on the submission port
587 and needed to add the content_filter there. In fact I don't need two
IP addresses for the smtp delivered mail :)
On 09/10/2015 06:12 PM, Mark Clarke wrote:
> Hi there,
>
> We have a transport map setup so that mail destined for the local
> domain or from some subdomain email servers is not routed to our relay
> gateway. These entries have a null gateway set. Mail destined for all
> other domains is routed via our relay.
>
> e.g
>
> serve...@server01.abc.co.za :
> ad...@dms.abc.co.za :
> abc.co.za :
> * smtp:relay.xyz.co.za
>
>
> We need to apply a content_filter to all outgoing mail. To do this we
> have set up two smtp processes in master.cf
>
> 192.168.10.73:smtp inet n - - - - smtpd
> 192.168.10.72:smtp inet n - - - - smtpd
>-o content_filter=dfilt:
> dfilt unix- n n - - pipe
> flags=Rq user=filter argv=/etc/postfix/postfix_filter.sh -f
> ${sender} -- ${recipient}
>
>
> this is for the altermime script. In main.cf we have set up
>
> smtp_bind_address = 192.168.10.72
>
> The problem is it appears the transport map simply by passes the
> outgoing smtp server settings as defined in main.cf and with
> smtp_bind_address. I have tried editing the transport map to force it
> to use the 192.168.10.72:smtp service but this doesn't work. How can I
> get this to work? i.e route outgoing mail to a specific gateway via
> transport maps but still apply a content filter to outgoing mail?
>
>
> thanks
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