# How to recalculate mailbox quota [TOC] iRedMail enables dict quota since v0.7.0, dict quota is recalculated only if the quota goes below zero. * For MySQL and PostgreSQL backend:

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# ---- For iRedMail-0.7.4 and later versions ----
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mysql> USE vmail;
mysql> DELETE FROM used_quota WHERE username='user@domain.ltd';

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# ---- For iRedMail-0.7.3 and earlier versions ----
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mysql> USE vmail;
mysql> UPDATE mailbox SET bytes=-1,messages=-1 WHERE username='user@domain.ltd';

* For OpenLDAP backend:

mysql> USE iredadmin;
mysql> DELETE FROM used_quota WHERE username='user@domain.ltd';

Re-login to webmail will get correct quota size. If there're records for non-exist mail users in table ```used_quota```, please delete them.