Fedora8, Intel motherboard, 4GB memory, Zimbra OSS 5.0.0. Worked well from the moment of installation version 5.0.0. I have updated Zimbra to version 5.0.11 and have received regular stops mailboxd in 15-20 minutes after start. Manipulations with parameter mailboxd_java_heap_memory_percent have not given any changes.
After a stop there is an error in mailboxd.log:
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FATAL [LmtpServer-2] [] system - Fatal error occurred while handling connection java.lang is fixed.
OutOfMemoryError: Java heap space at org.apache.lucene.store. IndexInput.readString (IndexInput.java:111)
.....
...etc... lot of Java errors....
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How to eliminate the stop reasons? Now I have temporarily corrected it, restarting zmmailboxdctl each 15 minutes through crontab.