Known Issues: eximstats mysql database get unoptimized
From CPWiki
Eximstats delete from their Mysql databases often so it quickly get unoptimized.
[edit] Case Example
Before optimize my eximstats mysql database had 40MB.
After it 10MB was freed.
[edit] Fix
Fo fix it, add at root crontab:
10 10 */7 * * echo "OPTIMIZE TABLE eximstats.sends, eximstats.smtp;" | mysql

