----- "mouss" <[email protected]> schrieb:

> C. V. a écrit :
> > Hi,
> > 
> > i've setup my mailsystem a while ago and query MySQL and LDAP vor
> address and domain mappings. 
> > 
> > Since both of them (database and directory) are more likely to be
> down of many reasons (network, connection overload etc.) i want to add
> a "backup" with hash files (hash:/some/file).
> > To reduce the queries i need to know the order in which postfix uses
> the lists. After a lot of searching without success, i now ask you:
> > 
> 
> 
> there's no backup. you have the choice between:
> 
> - accepting temp failures if the backend is down
> - using a backedn that doesn't get down (hash, cdb, ...)
> 
ok, i am all for "by the book" but postfix has to have some kind of order. as 
in the other answer to my question, a behavior like described (if one of the 
map fails _caused by a network error_ and not the "there is no such domain in 
this map") is hopefully not really implemented. but if so i'd rather just use 
local files.


> 
> > Here my first try:
> > 
> > virtual_mailbox_domains = hash:/etc/postfix/generated-ldap-domains
> mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf
> ldap:/etc/postfix/ldap-zimbra-domains.cf
> > 
> 
> Multiple maps support is not meant for fail-over of one map. it's
> like
> if they were concatenanted: if no match is found, move to the next
> map.
Using them as fail-over would really be nice to do and i think shoult work. 
postix does not concatenantes these maps because it trys them one by one - in 
which order?

is there any documentation on that?



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