Deploy for large outgoing emails

[Mudasar]

We have plan to deploy Zimbra server that will send large number emails. 5000 Mail per minute. Receiving mails/lmtp will be near 0.

Following is the system specs

Server Class: Sun X2200M2
RAM: 32GB
CPU: AMD Quad-Core
NIC: 4 x 100Gbps
Hard disk size: 2 x 250 GB(SATA 7200rpm)
RAID: Raid 1
Available H/D size: 250GB

We are going to install 2 Virtual machines on this system. Both Vhost share the system recourse equally.

After my research, i am going to change following Zimbra/OS parameters

innodb_buffer_pool_size = 30% of memory
table_cache- 1200 to 2000
innodb_open_files= 4310
mailboxd_java_heap_memory_percent = 25%
#zmlocalconfig -e mailboxd_java_options="-server -Djava.awt.headless=true -XX:+UseConcMarkSweepGC -XX:NewRatio=2 -XX:PermSize=128m -XX:MaxPermSize=128m -XX:SoftRefLRUPolicyMSPerMB=1 -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+PrintGCApplicationStoppedTime"

net.ipv4.tcp_fin_timeout=15
net.ipv4.tcp_tw_reuse=1
net.ipv4.tcp_tw_recycle=1

Please let me know if it works or do i need to change any other settings.

MY

[phoenix]

Originally Posted by Mudasar

We have plan to deploy Zimbra server that will send large number emails.

Then why did you post this in the Zimbra Desktop forums? Please post your questions in the correct forum, I'll move this thread.

[Mudasar]

oh sorry i f have opened it in Zimbra desktop. My apology.

I am just looking for your expert opinion.


Thanks

[vavai]

Originally Posted by Mudasar

oh sorry i f have opened it in Zimbra desktop. My apology.

I am just looking for your expert opinion.


Thanks

The following link maybe useful : Performance Tuning Guidelines for Large Deployments - Zimbra :: Wiki

[Mudasar]

I have read this link, i have just share it to get some expert view.

[blason]

I dont think so there should be any issue I just managed to integrate Zimbra with Sugar CRM for outgoing email though quantity is not so huge. However you also need to keep one ting in mind, provisioning good hardware can not be the only solution there could be other factors which might affect your performance line your Internet BW, firewall performance, firewall Port speed, switch port speed, firewall to router connectivity, your DNS Setup, firewall ACLs for DNS queries as well as SMTP traffic etc.

[Mudasar]

Blason, Thanks for your valued input, do you think there are other setting that be can effect overall performance.

[vavai]

Hi,

Originally Posted by Mudasar

Blason, Thanks for your valued input, do you think there are other setting that be can effect overall performance.

I would recommend to separates your incoming and outgoing mail servers. In my case, my outgoing mail servers was Zimbra setup with :

1. Anti spam & anti virus disabled
2. snmp, stats, logger and spell disabled

zmprov ms mail.vavai.com -zimbraServiceEnabled snmp
zmprov ms mail.vavai.com -zimbraServiceEnabled logger
zmprov ms mail.vavai.com -zimbraServiceEnabled stats
zmprov ms mail.vavai.com -zimbraServiceEnabled antivirus
zmprov ms mail.vavai.com -zimbraServiceEnabled antispam
zmprov ms mail.vavai.com -zimbraServiceEnabled spell
zmcontrol restart

3. POP3, IMAP disabled from Zimbra Admin | Global Settings | Imap/POP
4. Modify zmmtaconfig, default are 60 seconds.

zmlocalconfig -e zmmtaconfig_interval=7200
zmmtactl restart

5. Modify zimbraLogRawLifetime setup for logs

zmprov mcf zimbraLogRawLifetime 7d
zmprov mcf zimbraLogSummaryLifetime 30d
/opt/zimbra/libexec/zmlogprocess

6. Modify Zimbra crontab for Zimbra status (default are 2 minutes, I change it to 1 hours) :

su - zimbra
crontab -e

and modify the following line :

*/2 * * * * /opt/zimbra/libexec/zmstatuslog

to

0 * * * * /opt/zimbra/libexec/zmstatuslog

7. Remove unnecessary plugins, zimlets and Admin extensions.

[Mudasar]

These are very good tips, i am very thank full to you.