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<br><br>> Date: Tue, 23 Nov 2010 14:44:34 +0000<br>> From: iane@sussex.ac.uk<br>> To: proutfoo@hotmail.com; info-cyrus@lists.andrew.cmu.edu<br>> Subject: Re: disable IMAP IDLE<br>> <br>> <br>> <br>> --On 22 November 2010 18:40:37 -0500 Ron Vachiyer <proutfoo@hotmail.com> <br>> wrote:<br>> <br>> ><br>> > Hello,<br>> ><br>> > I thought it was possible in Cyrus to disable the IDLE functionality,<br>> > either with imapidlepoll: 0 in imapd.conf, or by commenting idled in<br>> > cyrus.conf. However, having both disabled, clients still connect and<br>> > maintain their socket open on tcp 143. Is it not possible or am I going<br>> > about it wrong?<br>> <br>> I thought sessions remained open for efficiency, regardless of IDLE, until <br>> closed by the client or 30 minutes have elapsed.<br>> <br>> IDLE just lets the server notify the client if new email arrives, doesn't <br>> it?<br>> <br>> Even without IDLE, there are benefits in leaving the session open. <br><br>Hello,<br><br>I won't argue since clearly I am in the minority ;) Using courier-imap on our Plesk servers, TCP/143 is closed after every new mail verification. A dovecot server I checked does the same. Cyrus seems to allow the session to be maintained, and yes, it does not advertise IDLE.<br><br>Below is an example courier-imap capability;<br><br>* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2004 Double Precision, Inc. See COPYING for distribution information.<br>. CAPABILITY<br>* CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA ACL ACL2=UNION STARTTLS<br><br><br>this one is cyrus 2.4.4<br><br>. capability<br>* CAPABILITY IMAP4rev1 LITERAL+ ID ENABLE STARTTLS AUTH=PLAIN SASL-IR ACL RIGHTS=kxte QUOTA MAILBOX-REFERRALS NAMESPACE UIDPLUS NO_ATOMIC_RENAME UNSELECT CHILDREN MULTIAPPEND BINARY CATENATE CONDSTORE ESEARCH SORT SORT=MODSEQ THREAD=ORDEREDSUBJECT THREAD=REFERENCES ANNOTATEMORE LIST-EXTENDED WITHIN QRESYNC SCAN XLIST URLAUTH URLAUTH=BINARY X-NETSCAPE COMPRESS=DEFLATE<br>. OK Completed<br><br>I was asked by IT to not permit IDLE since the current server went down after 4-500 blackberries ate up all the (limited) capabilities of that machine. Perhaps I am looking in the wrong place, the point is the demand I am facing is to have IMAP that essentially behaves as a POP3 client when it comes to inbox scans.<br><br>I believe there was an issue as well where POP clients using outlook would cause mailbox corruption when they popped a mailbox being maintained by a blackberry connected via IMAP. <br><br>R.<br><br> </body>
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