> 
> On 21 May 2022, at 11:23 am, post...@ptld.com wrote:
> 
> My goal is to have postfix deliver to LMTP lowercase recipient addresses to 
> overcome a dovecot shortcoming (delimited forwarding to special folders) that 
> dovecot doesn't appear interested in fixing.

For each affected recipient not already aliased to another address you can add 
identity mappings to virtual_alias_maps:

        u...@example.org        u...@example.org

The case of the result is taken from the RHS of the virtual(5) table, the input
key is case-insensitive.

-- 
        Viktor.

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