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. >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? -- Dan White ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
