[Dovecot] 1.1rc1 "Transaction rolled back"?

[Ralf Hildebrandt]

>From my logs:

Feb 27 08:10:33 postamt dovecot: IMAP(username): expunge: uid=2793, box=Trash, msgid=<E2FEA6DFF2340C438369E79466FB7E94F43547 at EXCHANGE01.charite.de>, size=3025
Feb 27 08:10:33 postamt dovecot: IMAP(username): expunge: uid=2794, box=Trash, msgid=<20080226140752B6F6EC3EF7$08D09877C3 at REALTIMEPCR>, size=12833
Feb 27 08:10:33 postamt dovecot: IMAP(username): expunge: uid=2795, box=Trash, msgid=<8f63285b4b444b9839c94615c28bcd3347c46aec at origene.com>, size=20931
Feb 27 08:10:33 postamt dovecot: IMAP(username): expunge: uid=2796, box=Trash, msgid=<0118578B.8438D393 at xms1-1.vtrnz.com>, size=12066
Feb 27 08:10:33 postamt dovecot: IMAP(username): expunge: uid=2797, box=Trash, msgid=<1204067704.28W488X7.30077 at biologyproject.net>, size=3328
Feb 27 08:10:33 postamt dovecot: IMAP(username): expunge: uid=2798, box=Trash, msgid=<2a989b59b24e90a1f0fea02e3582ef6d at ionchannels.org>, size=10197
Feb 27 08:10:33 postamt dovecot: IMAP(username): expunge: uid=2799, box=Trash, msgid=<20080226183239684063.12829 at mailmanager.icebase.net>, size=37658
Feb 27 08:10:33 postamt dovecot: IMAP(username): expunge: uid=2800, box=Trash, msgid=<200802271434.GKTB5350 at monthly.smtp.com>, size=3717
Feb 27 08:10:33 postamt dovecot: IMAP(username): Transaction rolled back: Ignore last 8 changes
Feb 27 08:10:33 postamt dovecot: IMAP(username): Disconnected: Too many invalid IMAP commands. bytes=16371917/34458424

a) What's "Transaction rolled back"? When does it happen? What does it
   do? Does it - in this case - UNDO the 8 expunges?
b) What's "Too many invalid IMAP commands"?
   And when ist it being triggered?
   
-- 
Ralf Hildebrandt (Ralf.Hildebrandt at charite.de)          snickebo at charite.de
Postfix - Einrichtung, Betrieb und Wartung       Tel. +49 (0)30-450 570-155
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