dovecot hung after executing UID COPY
Issue
- dovecot hung after executing UID COPY against a non-existent mailbox.
# nc localhost 143
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN] Dovecot ready.
1 LOGIN testuser testuser
1 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS] Logged in
2 SELECT INBOX
* FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
* OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted.
* 3 EXISTS
* 0 RECENT
* OK [UNSEEN 3] First unseen.
* OK [UIDVALIDITY 1406525494] UIDs valid
* OK [UIDNEXT 4] Predicted next UID
* OK [HIGHESTMODSEQ 1] Highest
2 OK [READ-WRITE] Select completed.
3 UID COPY 5 hoge
3 NO [TRYCREATE] Mailbox doesn't exist: hoge
4 SELECT INBOX
****** dovecot doesn't response to SELECT command ******
Environment
- Red Hat Enterprise Linux 6 Update 5
- dovecot-2.0.9-7.el6
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