I mostly waned top make sure that your delivery concurrency wasn’t limited by the number of processes that could access a named pipe. That doesn’t seem to be your problem, though.
-- Stephen > On May 18, 2015, at 4:21 AM, jayesh shinde <jayesh.shi...@netcore.co.in> > wrote: > > Hi Stephen , > > I am handling via TCP i.e from smtp server to mailbox server. > > on smtp server postfix's main.cf transport_maps is maintain , which deliver > the emails to lmtp. > > Example like below. > /@mydomain.com/ lmtp:[192.168.1.1] > > Request you to please guide here or any fine tuning etc .... > > Regards > Jayesh Shinde > > > On 05/15/2015 10:11 PM, Stephen Ulmer wrote: >> Are you handing off to LMTP via TCP or a pipe? >> >> -- >> Stephen >> >> >> >>> On May 15, 2015, at 2:18 AM, jayesh shinde <jayesh.shi...@netcore.co.in >>> <mailto:jayesh.shi...@netcore.co.in>> wrote: >>> >>> Thanks Dan for your feedback. >>> I verified the suggested points , its working as require. Please find >>> below inline reply for each. >>> >>> I found that when big group email is getting deliver ( i.e more than 500 - >>> 4K members ) at that time other emails are not getting deliver >>> simultaneously to user's mailbox. >>> I verified this from live maillog i.e by doing grep key words like "to >>> mailbox:" / "Delivered:" etc ... >>> >>> My mail queue issue is getting critical in peak hours !! Kindly suggest. >>> >>> On 05/14/2015 08:22 PM, Dan White wrote: >>>> On 05/14/15 05:42 +0000, jayesh.shinde wrote: >>>>> Please suggest , for faster delivery what could be the best config in >>>>> postfix + cyrus-imapd . >>>>> >>>>> I am using the cyrus-imapd-2.4.17-6.el6.x86_64 for mailbox server and for >>>>> smtp server postfix-2.10.0-1.el6.x86_64 Both server have SAS hdd , 16 >>>>> core >>>>> , 16 GB RAM . There is no i/o issues >>>> >>>>> Mailbox server have 21K email ids. Cyrus running with tcp socket on >>>>> port 24 i.e lmtpd . cyrus singleinstance is maintained >>>> >>>>> For group id mapping is under virtual_alias_maps of smtp's main.cf i.e >>>>> no >>>>> /etc/aliases. From smtp server emails are getting deliver by >>>>> transport_maps to mailbox server . >>>> >>>>> My problem observe :-- >>>>> -------------------------- >>>>> 1) When HOD send email to 3-5 big group email ids then , then its >>>>> postfix >>>>> delivery get slow. What I observe is postfix getting delivered the >>>>> traffic >>>>> per email and not parallel. Each group contain 3k or 7k email ids. >>>> >>>> Verify that single instance store is working. If not, you may have a >>>> Postfix configuration issue. Find one of these mass emails in a mailbox >>>> and >>>> stat it to find out: >>>> >>>> stat -c %h <file> >>>> >>>> A returned value of 1 means single instance store isn't working. >>>> >>>> If that's not the issue, you can determine if this is a postfix issue or a >>>> cyrus issue by sending a mass email directly to lmtpd, with lmtptest. >>> Cyrus Singleinstance is working , I have verified like below. In imapd.conf >>> man page its define as default 1 ( i.e default enable ) >>> >>> [root@Mailbox ~]# ls -lirth /var/spool/imap/domain/v/vdomain/m/user/muser1/ >>> | tail -n 20 >>> >>> 163326970 -rw------- 198 cyrus mail 413K May 15 10:07 64828. >>> 163396232 -rw------- 145 cyrus mail 92K May 15 10:13 64829. >>> 163379367 -rw------- 151 cyrus mail 96K May 15 10:29 64830. >>> 163323993 -rw------- 496 cyrus mail 13K May 15 10:30 64831. >>> 163398621 -rw------- 516 cyrus mail 850K May 15 10:42 64832. >>> 163398568 -rw------- 523 cyrus mail 455K May 15 10:43 64833. >>> 163398933 -rw------- 617 cyrus mail 3.7M May 15 10:47 64834. >>> 163398962 -rw------- 522 cyrus mail 1.3M May 15 10:48 64835. >>> 163398990 -rw------- 617 cyrus mail 58K May 15 10:49 64836. >>> 163396678 -rw------- 465 cyrus mail 207K May 15 10:56 64837. >>> 163399529 -rw------- 576 cyrus mail 332K May 15 10:57 64838. >>> 163399554 -rw------- 2 cyrus mail 54K May 15 10:57 64839. >>> 163346523 -rw------- 36 cyrus mail 767K May 15 11:01 64840. >>> >>> [root@Mailbox muser1]# stat -c %h 64829. >>> 145 >>> [root@Mailbox muser1]# stat -c %h 64828. >>> 198 >>> >>>> >>>>> In peak hours the queue on postfix get high and other normal emails also >>>>> getting stuck in queue. Once the group email get clear after that other >>>>> emails also get clear. >>>> >>>>> in mailbox cyrus.conf :-- lmtp cmd="lmtpd -a" listen="lmtp" prefork=0 >>>>> in main.cf of smtp server :-- >>>>> lmtp_destination_concurrency_limit = 100 >>>>> lmtp_destination_recipient_limit = 0 >>>> >>>> How many lmtp processes do you see spawned in this scenario? >>>> >>> [root@Mailbox ~]# ps auxwww| grep lmtp >>> >>> cyrus 3224 0.0 0.0 73376 4648 ? S 10:55 0:00 lmtpd >>> cyrus 4043 0.0 0.0 73376 4156 ? S 10:59 0:00 lmtpd >>> postfix 6972 0.0 0.0 75708 4336 ? S 11:10 0:00 lmtp -t >>> unix -u >>> postfix 6974 0.0 0.0 75708 4340 ? S 11:10 0:00 lmtp -t >>> unix -u >>> postfix 6975 0.0 0.0 75708 4336 ? S 11:10 0:00 lmtp -t >>> unix -u >>> postfix 6977 0.0 0.0 75708 4344 ? S 11:10 0:00 lmtp -t >>> unix -u >>> postfix 6979 0.0 0.0 75708 4336 ? S 11:10 0:00 lmtp -t >>> unix -u >>> postfix 6981 0.0 0.0 75708 4336 ? S 11:10 0:00 lmtp -t >>> unix -u >>> postfix 6985 0.0 0.0 75708 4348 ? S 11:10 0:00 lmtp -t >>> unix -u >>> cyrus 6998 0.0 0.0 73376 4052 ? S 11:10 0:00 lmtpd >>> cyrus 7001 0.0 0.0 73376 4044 ? S 11:10 0:00 lmtpd >>> cyrus 7234 0.9 0.0 75456 4976 ? S 11:12 0:04 lmtpd -a >>> cyrus 8758 0.6 0.0 75452 4112 ? S 11:19 0:00 lmtpd -a >>> root 8898 0.0 0.0 103236 972 pts/1 S+ 11:19 0:00 grep >>> --colour=auto lmtp >>> cyrus 46046 0.0 0.0 73376 4648 ? S 10:28 0:01 lmtpd >>> cyrus 48107 0.0 0.0 73372 4740 ? S 10:37 0:01 lmtpd >>> cyrus 48108 0.0 0.0 73376 4700 ? S 10:37 0:01 lmtpd >>> >>> lmtpd :-- 7 process >>> lmtp -t unix -u :-- 7 process >>> lmtpd -a :-- 2 process >>> >>> Cyrus config is as follows: >>> ----------------------------------- >>> >>> SERVICES { >>> imap cmd="imapd" listen="imap" prefork=5 >>> imaps cmd="imapd -s" listen="imaps" prefork=1 >>> pop3 cmd="pop3d" listen="pop3" prefork=3 >>> pop3s cmd="pop3d -s" listen="pop3s" prefork=1 >>> sieve cmd="timsieved" listen="sieve" prefork=0 >>> >>> lmtp cmd="lmtpd -a" listen="lmtp" prefork=0 >>> lmtpunix cmd="lmtpd" listen="/var/lib/imap/socket/lmtp" prefork=1 >>> } >>> >>> [root@Mailbox ~]# cat /etc/imapd.conf >>> configdirectory: /var/lib/imap >>> partition-default: /var/spool/imap >>> admins: cyrus >>> sievedir: /var/lib/imap/sieve >>> sendmail: /usr/sbin/sendmail >>> hashimapspool: true >>> sasl_pwcheck_method: saslauthd >>> sasl_mech_list: PLAIN >>> allowplaintext: yes >>> unixhierarchysep: 1 >>> virtdomains: yes >>> altnamespace: on >>> defaultdomain: mydomain.com <http://mydomain.com/> >>> expunge_mode: immediate >>> delete_mode: immediate >>> tls_cert_file: /usr/share/ssl/certs/server.pem >>> tls_key_file: /usr/share/ssl/certs/server.key >>> tls_ca_file: /etc/pki/tls/certs/ca-bundle.crt >>> lmtp_over_quota_perm_failure: 1 >>> duplicatesuppression: 1 >>> duplicate_db_path: /var/lib/imap/cyrus-ram-tmpfs/deliver.db >>> statuscache_db_path: /var/lib/imap/cyrus-ram-tmpfs/statuscache.db >>> tlscache_db_path: /var/lib/imap/cyrus-ram-tmpfs/tls_sessions.db >>> >>> Regards >>> Jayesh Shinde >>> ---- >>> Cyrus Home Page: http://www.cyrusimap.org/ <http://www.cyrusimap.org/> >>> List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ >>> <http://lists.andrew.cmu.edu/pipermail/info-cyrus/> >>> To Unsubscribe: >>> https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus >>> <https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus> >
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