Re: [Bug] Sieve vacation :addresses match only case-sensitive?

Le 4 sept. 2019 à 19:37, Roger Klorese via dovecot dovecot@dovecot.org a écrit :

On Wed, Sep 4, 2019 at 8:25 AM Philipp Faeustlin via dovecot mailto:dovecot@dovecot.org> Further investigation showed me that it has to be a bug.

I tested with Dovecot 2.2.36.3 (a7d78f5a2), Pigeonhole version 0.4.24 (5a7e9e62):

In this version the additional addresses in vacation :addresses ["test@example.com mailto:test@example.com"] are handled case-insensitive.

In the new version: Dovecot 2.3.7.2 (3c910f64b), Pigeonhole version 0.5.7.2 (7372921a) installed via https://repo.dovecot.org/ https://repo.dovecot.org/, (same sieve, same configuration) these addresses are handled case-sensitive.

The case-sensitive matching of mail addresses, doesn't make any sense to me.

Could someone confirm this behavior?

Isn’t RFC-compliant behavior to treat the local part as case-sensitive and the domain-part as case-insensitive?

It is not recommended to rely on local-part case, but it is indeed case-sensitive.

And this is to avoid such issues that postfix supports address cleanup/canonicalisation before forwarding mails to dovecot.

RFC 5321:

"Local-part = Dot-string / Quoted-string ; MAY be case-sensitive […] While the above definition for Local-part is relatively permissive, for maximum interoperability, a host that expects to receive mail SHOULD avoid defining mailboxes where the Local-part requires (or uses) the Quoted-string form or where the Local-part is case-sensitive."