amavis behind haproxy

[Vitali Quiering]

Thank you very much Tom.

If a postfix (mta01.example.com <http://mta01.example.com/>, the actual mailserver) sends a mail to another postfix (mta02.example.com) that sends it to amavis (av.example.com), how can you send the scanned mail back to mta01.example.com <http://mta01.example.com/>?

Where do you loadbalance?

I am talking about up to 80 postfix instances that will send mail to mta02.example.com <http://mta02.example.com/>.

Regards,
Vitali

> Am 19.09.2018 um 15:09 schrieb Tom Sommer <mail at tomsommer.dk>:
> 
> On 2018-09-19 14:15, Vitali Quiering wrote:
> 
>> I already got the forward_method, socket_bind and inet_acl setup
>> correctly. The problem I’m facing now is the ip that amavis sees and
>> wants to send the result to. This is the haproxy ip address which of
>> course doesn’t work.
> 
> The problem is, IIRC, that haproxy doesn't send XFORWARD - it sends its own variant, supported by Postfix.
> 
> So AFIAK you need Postfix in front the preserve the IP.
> 
> You could in theory have postfix do the balancing between the multiple amavis servers (content filters), with a randomized lookup table, personally I just have a postfix in front of every amavis instance.
> 
> --
> Tom

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