mail/dovecot-pigeonhole: upgrade to 0.4.20.
Changelog v0.4.20:

+ Made the retention period for redirect duplicate identifiers

configurable. For accounts that perform many redirects, the lda-dupes
database could grow to impractical sizes. Changed the default
retention period from 24 to 12 hours.

• sieve-filter: Fixed memory leak: forgot to clean up script binary at end of execution. Normally, this would merely be an inconsequential memory leak. However, when the script comes from an LDAP storage, this would cause io leak warnings.
• managesieve-login: Fixed handling of AUTHENTICATE command. A second authenticate command would be parsed wrong. This problem was caused by changes in the previous release.
• LDA Sieve plugin: Fixed minor memory leak caused by not cleaning up the sieve_discard script.