Hi all.

We recently are encountering some problems with a certain cyrus imap group.
The group had 4 members, and one of them quitted so his mail box 
was deleted (through oxadmin webinterface). The remaining group members do
exists, the member who quitted doesn’t have
any account left nor isn’t listed in the webinterface of oxadmin. 

Since we deleted the former member, we always get this error message when
the group receives a mail.
Apr  2 06:50:20 mail postfix/local[8853]: B4046ABDD8:
to=<edv at mail.schmitt-aufzuege.de>, relay=local, delay=153205,
status=deferred (temporary failure)  
The mail is forwarded correctly to all remaining members, this seems to work
as it is assumed to. The nasty thing about is, that after the nightly server
restart,
all the mails to this group are bounced back again, so every mail is
received two times. 

Any hints on how to correct this one?

Regards
Joerg