Error decompressing data

[steffo76 at gmx.de]

Hi list,

I am having trouble with Apple Mail on iPhone and cyrus imapd. In telemetry logging I see the following:

3 OK Completed^M
<1341234999<4 COMPRESS DEFLATE^M
>1341234999>4 OK DEFLATE active^M
>1341235140>* BYE Error decompressing data^M

In my maillog I can see the following

Jul  2 15:24:06 server imap[32304]: zlib inflate error: -3 invalid distance too far back

This is cyrus imapd 2.4.12. Any hints how to resolve this ?

Thanks,
Stephan