[Dovecot] Hints for a NFS-Setup

[Patrick Domack]

Quoting Timo Sirainen <tss at iki.fi>:

> On 4.4.2012, at 15.29, Jerry wrote:
>
>>>> Now I use relay_transport = lmtp:unix:private/dovecot-lmtp.
>>>> Even if I change this to lmtp:tcp:1.2.3.4:24 it is still only one
>>>> director.
>>>
>>> I don't know if Postfix supports that. Typically people use a load
>>> balancer (cluster).
>>
>> Perhaps posting on the Postfix forum and asking Wietse Venema would be
>> the logical course of action.
>
> I have a guess though, or alternatively a suggestion if it already  
> doesn't work like that:
>
> lmtp:tcp:lmtp.example.com:24
>
> where lmtp.example.com expands to your two IP addresses. DNS server  
> handles load balancing by returning IPs in round robin and Postfix  
> handles fallbacking to the second IP if the first one doesn't work.  
> Dovecot has similar behavior in several places.

Personally I use MX dns entries, lowest mx entry is localhost, then others.