If I recall correctly, this is a bad interaction/bug between Cyrus IMAPd and Cyrus SASL. I see you're running IMAP 2.3.10. What version of SASL? :wes On 17 Nov 2007, at 10:27, Dan White wrote: > Nov 17 09:25:02 neo cyrus/imap[11281]: encoded packet size too big > (4156 > 4096)