These are (very) old versions of dovecot and friends dovecot+sieve https://aur.archlinux.org/packages/dovecot%2Bsieve/ dovecot-managesieve https://aur.archlinux.org/packages/dovecot-managesieve/ dovecot-sieve https://aur.archlinux.org/packages/dovecot-sieve/
Thanks -- Arthur Țițeică
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