How to Increase Zimbra Attachment/Upload Size Maximum

root@mail:~# telnet localhost 25
Trying ::1...
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 mail.localhost.com ESMTP Postfix
helo mail.localhost.com
250 mail.localhost.com
ehlo mail.localhost.com
250-mail.localhost.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
quit
221 2.0.0 Bye
Connection closed by foreign host.
root@mail:~#




root@mail#su - zimbra
zimbra@mail:~$  postconf message_size_limit
message_size_limit = 10240000
zimbra@mail:~$
zimbra@mail:~$ zmprov mcf zimbraMtaMaxMessageSize 15728640
zimbra@mail:~$ zmprov mcf zimbraFileUploadMaxSize 15728640
zimbra@mail:~$ zmprov mcf zimbraMailContentMaxSize 26214400
zimbra@mail:~$ zmprov modifyConfig zimbraMtaMaxMessageSize 26214400
zimbra@mail:~$ postfix reload
/postfix-script: refreshing the Postfix mail system
zimbra@mail:~$
zimbra@mail:~$  postconf message_size_limit
message_size_limit = 26214400
zimbra@mail:~$

root@mail:~# telnet localhost 25
Trying ::1...
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 mail.localhost.com ESMTP Postfix
ehlo mail.localhost.com
250-mail.localhost.com
250-PIPELINING
250-SIZE 26214400
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
exit
502 5.5.2 Error: command not recognized
quit
221 2.0.0 Bye
Connection closed by foreign host.
root@mail:~#

How to Configure apt-get with Proxy on Ubuntu 14.04

apt-get command with Proxy on Ubuntu 14.04

#cd /etc/apt/apt.conf.d

สร้างไฟล์ชื่อ 10proxy:

#sudo vi 10proxy

จากนั้นให้เพิ่มบรรทัดเข้าไป แบบไม่ Authentication

Acquire::http::Proxy "http://yourproxyaddress:proxyport/";

ถ้าเป็น Authentication:

Acquire::http::Proxy "http://username:password@yourproxyaddress:proxyport/";

Example:
root@demo:/# cat /etc/apt/apt.conf.d/10proxy
Acquire::http::Proxy "http://x.x.x.x:8080/";
root@demo:/#

หลังจาก นั้นก็  apt-get update && apt-get upgrade โลด

เอาพื้นที่ System Reserved คืนมาจากการติดตั้ง Windows

System Reserved ถ้าไม่คิดว่าจะได้ใช้ เอาพื้นที่มาใช้ดีก่าครับ Windows พังก็ลงใหม่แค่นั้น

วิธีการไม่เอา System Reserved ตอนติดตั้ง Windows  (เน้นคลิกและอธิบายตามภาพนะครับ)

How to Configure TFTP Server on CentOS 6

#yum install -y tftp tftp-server xinetd

#mkdir /Backup

#chmod 777 /backup

#vi /etc/xinetd.d/tftp

# default: off

# description: The tftp server serves files using the trivial file transfer \

#       protocol.  The tftp protocol is often used to boot diskless \

#       workstations, download configuration files to network-aware printers, \

#       and to start the installation process for some operating systems.

service tftp

{

        disable = no

        socket_type             = dgram

        protocol                = udp

        wait                    = yes

        user                    = root

        server                  = /usr/sbin/in.tftpd

        server_args             = -s -c /backup

        per_source              = 11

        cps                     = 100 2

        flags                   = IPv4

        disable                 = no

}

#vi /etc/sysconfig/iptables

-A INPUT -m state --state NEW -m udp -p udp --dport 69 -j ACCEPT

# /etc/init.d/xinetd restart

# /etc/init.d/iptables restart

Verify listen port services xinetd and tftp:

>netstat -tanup

Testing get file through TFTP Server:

#echo “TFTP Hello test” > /backup/test.txt

>tftp 127.0.0.1

>get test.txt

Get Message 'system failure: exception During auth soap: Receiver' on Zimbra Web Admin

Change SSH Port by default (22) to Other Port on Zimbra Server

root@mail:~# netstat -tnlup |grep 9955
tcp        0      0 0.0.0.0:9955            0.0.0.0:*               LISTEN      26496/sshd
root@mail:~#


Problem:
Get Message Popup

Message: system failure: exception During auth {RemoteManager: zimbra.demo.biz-> zimbra@zimbra.demo.biz: 22} Error code: service.FAILURE Method: [unknown] Details: soap: Receiver

root@mail:~# su - zimbra
zimbra@mail:~$ zmprov gacf | grep Remote
zimbraRemoteManagementCommand: /opt/zimbra/libexec/zmrcd
zimbraRemoteManagementPort: 22
zimbraRemoteManagementPrivateKeyPath: /opt/zimbra/.ssh/zimbra_identity
zimbraRemoteManagementUser: zimbra
zimbra@mail:~$



Solution:
zimbra@mail:~$ zmprov mcf zimbraRemoteManagementPort 9955

zimbra@mail:~$ zmprov gacf | grep Remote
zimbraRemoteManagementCommand: /opt/zimbra/libexec/zmrcd
zimbraRemoteManagementPort: 9922
zimbraRemoteManagementPrivateKeyPath: /opt/zimbra/.ssh/zimbra_identity
zimbraRemoteManagementUser: zimbra
zimbra@mail:~$


Thanks.

How to Redirect HTTP to HTTPS Zimbra 8 Web Client Sign in.

Login to Zimbra Mail Server.

#su zimbra
zimbra@mail:/root$ zmtlsctl redirect
zimbra@mail:/root$ zmcontrol restart


Checking Mode
zimbra@mail:/root$ zmprov gs `zmhostname` | grep MailMode
zimbraMailMode: redirect
zimbra@mail:/root$


More info:  https://wiki.zimbra.com/wiki/CLI_zmtlsctl_to_set_Web_Server_Mode

Thanks.