On 2/5/08, Martin Gombac <martin@xxxxxx> wrote: > Hi, > > i have never seen this behavior before, but in my current setup when > people access imap with squirrellmail from first server (WEB), after > successful login there stays a connection in TIME_WAIT stage on the > imap server (MAIL). On my other clusters and also with other imap > clients on this server, no one leaves TIME_WAIT behind. > > One can easily leave 100+ opened connections for tracking by clicking > Check mail periodically thus reaching my limit of connections per IP, > causing DOS. :-) On many of its pages, SM does not specifically send a LOGOUT command to the IMAP server. The reasons are complicated, although yes, ideally, this should not be the way it is designed. You can try to insert something like this at the VERY BOTTOM of all the /src files (or at least the most frequently used ones such as redirect.php, webmail.php (not sure if there are any logins in this page, but maybe there are from plugins), right_main.php, left_main.php, etc): sqimap_logout($imapConnection); If you try this, we'd appreciate hearing if it helped your situation at all. The other (perhaps better for other reasons) solution is to try using an IMAP proxy server, such as imapproxy (see SM docs regarding performance for details and hints about this if you don't know of it already). This should limit the number of connections your IMAP server sees for each user. > I have: > squirrelmail-1.4.10a > Installed Plugins > 1. translate > 2. retrieveuserdata > 3. spamcop > 4. filters > 5. message_details > 6. delete_move_next > 7. change_sqlpass > 8. select_range > php-5.2.5 > courier-imap-4.0.6 > 2.6.22-hardened gentoo kernel > every browser > > > Need i to specify more? > > Lines look like: > tcp 0 0 XX.XX.XX.1:143 XX.XX.XX.2:37294 > TIME_WAIT - > netstat -apln | grep 143 | grep TIME_WAIT | wc -l > 86 > And i did click 40+ times on check myself. > after some time it comes back down: > netstat -apln | grep 143 | grep TIME_WAIT | wc -l > 36 > > Please help me get connection from squirrelmail closed properly. > Thank you. > > Regards, > M. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ ----- squirrelmail-users mailing list Posting guidelines: http://squirrelmail.org/postingguidelines List address: squirrelmail-users@xxxxxxxxxxxxxxxxxxxxx List archives: http://news.gmane.org/gmane.mail.squirrelmail.user List info (subscribe/unsubscribe/change options): https://lists.sourceforge.net/lists/listinfo/squirrelmail-users
