IIRC for the group of IPs with the same weight,
Postfix put them into a array with max size 8, and pick up one from the
array by round robin.
On 2024-09-03 05:35, Pedro David Marco via Postfix-users wrote:
Hi everybody...
i think Wietse has explaned this before, but i cannot find the posts,
so please excuse with me if i ask this again.
I would like to clearify with myslef how Postfix smtp daemon deals
with remote MXs of a destination.
1.- When there are different MX with different weight but the DNS
shows them in different order every time..: does postfix consider the
weigth despite the order they are showed? and what happens when two
MX has same weigth?
2.- When each MX point to multiple servers, i guess Postifx takes
always the first server from the list, is this correct? what happens
if this server does not work? does Postfix takes the next server in
this list or will Postfix discard this list and go for the next MX?
Thanks in advance!
Pete.
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