Horde / IMP webmail 遇到 Allowed memory size exhausted

Q1) Allowed memory size of 8388608 bytes exhausted (tried to allocate 1466949 bytes) in /usr/share/psa-horde/lib/Horde/MIME/Part.php on line 1027, referer: http

A1) 只要將 memory_limit 設為 16 M 即可解決

至於為何不得而知