On Thu, Dec 25, 2025 at 01:47:30 +1100, Viktor Dukhovni via Postfix-users wrote:
> On Wed, Dec 24, 2025 at 03:16:06PM +0100, Marc Dierksen via Postfix-users 
> wrote:
> 
> > found a problem with Postfix on Rocky-10.
> 
> Perhaps more with the vendor packages, than Postfix software as such.
> 
> > [root@rocky10 ~]# postconf -d | grep btree
> > address_verify_map = btree:$data_directory/verify_cache
> > postscreen_cache_map = btree:$data_directory/postscreen_cache
> 
> These are the upstream defaults,
> 
>     $ git grep -wB1 btree -- src/global/mail_params.h
>     src/global/mail_params.h-#define VAR_VERIFY_MAP                 
> "address_verify_map"
>     src/global/mail_params.h:#define DEF_VERIFY_MAP                 
> "btree:$data_directory/verify_cache"
>     --
>     src/global/mail_params.h-#define VAR_PSC_CACHE_MAP      
> "postscreen_cache_map"
>     src/global/mail_params.h:#define DEF_PSC_CACHE_MAP      
> "btree:$data_directory/postscreen_cache"
> 
> but if a vendor does [NOT] ship "btree" or "hash" drivers for Postfix, they
> really should change the defaults.
> 


They dropped libdb for RHEL 10, and at least intended to change the default to 
lmdb:

https://src.fedoraproject.org/rpms/postfix/c/6a2621e4d73d59337dc64ba45922132286b841a1
https://src.fedoraproject.org/rpms/postfix/c/7235852485bb4452cd2f909d5ff9cbb6c451e08f


        Geert


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