Wednesday, November 9, 2016

Zimbra HA (High Availability Clustering) Mail Server Solution in Bangladesh.

Zimbra HA work?

Installing Zimbra on the High Availability Clustering (Active / Passive) or Zimbra HA is primarily intended to enhance the stability of corporate mail systems make Your Mail Server, organizations can access and use it all the time (uptime 100%) along. installation of surveillance and tracking the status of each service on the server. If any service is stopped, the system will stimulate Zimbra Mail Server on the back-up alternative work immediately (Prevent a Single point of Failure)

The installation of Zimbra HA server newsprint. Technology use DRBD (Distributed Replicated Block Device), which is software for copying data to disk through a network of open source has been the most popular. The copy data between the Zimbra Server in the main Block Device (Active) and UPS (Passive) and realtime (Realtime Sync).

Highlights of Zimbra HA

✓ cost-saving technology reduces the Open Souce License Center.
✓ Secure data storage is not lost on the Zimbra Server 2 machines.
✓ add maximum stability (Uptime) with surveillance downtime in service.
✓ system Zimbra High Availability Clustering uncomplicated maintenance.


FAQ About Zimbra HA (High Availability Clustering).

There are many types of High Availability Solution?

Divided into three categories: The first category is High availability clustering (HAC) focus on building a computer system to run back to each other (Redundancy) The second category is High performance computing clustering (HPC) focused on creating a powerful computer for processing. the big data The last type is Load leveling (load balancing) clusters focus on creating a computer system to load. The service Zimbra HA Server Today will focus on the installation of a High Availability Clustering (HAC).

Why install Zimbra on High Availability Clustering Infrastructures?

Email a communications major corporate installing Zimbra HA Clustering reduces the business impact stemming from the email server crashes (Single Point of Failure) helps prevent data loss. Enhances system stability Email Server (increased uptime), as well as reduce the inconvenience caused by maintenance work, such as plans to update the kernel to reboot the server. All the systems are virtually no downtime, any user can access and use corporate email continuity at all times.

Zimbra install the Active / Active Clustering or not?

Active / Active Clustering the servers will be used in both. Distributed load to each server. The complexity and cost of installation and maintenance is high. Zimbra HA solution we recommend the installation. Active / Passive This will only work on a single server. The server itself is in a ready state or Standby Mode (but still have time to Sync Data), which is appropriate. Solution for HA systems of Zimbra Email Server also has a cheaper cost. Active / Active .

Technology, DRBD is?

DRBD HA cluster software is software with open source. Work on the kernel level by adding layers between the driver disk and file system DRBD will copy data in Block Device from the source server to the destination server in realtime. Like a RAID-1 data Zimbra Server on the network.

Zimbra can install the Disaster Recovery Site (DR Site) or not?

DRBD technology is one of the alternatives to be recommended for preventing business disruptions caused by the disaster. Because a copy of the data over the network in the Block Device with realtime recovery process system is fast and easy to do. Traditional offsite-backup.


  .............................100% data save guaranty.

Please Contract  us:

System Engineer & Administrator

Zimbra/Zimbra HA/Postfix/VMware/Expert-RHCSA,RHCE
Address: House # 5/1, Primary School Road, Kallayenpur, Mirpur, Dhaka-1207, Bangladesh.
Email : info@serversolutinobd.com, serversolutionbd@gmail.com
Cell : 01719-322424

Friday, December 5, 2014

Zimbra Mail Server Configuration Training in Bangladesh

Zimbra Mail server : www.serversolutionbd.com


Zimbra Mail Server Training Topics Details:

Training Short description : DNS, Postfix, Zimbra + Zimbra Backup Server, Firewall and Troubleshooting:

       



















Part-1 Zimbra Configuration Training : 

       1. About of zimbra mail server.

       2. About of postfix mail service.

       3. Configure postfix mail server (postfix,dovecot, squirrel mail with SSL/TLS).

       4. Install & Domain parking in primary & secondary DNS Server.

       5. Zimbra mail server configuration :

       > Installation of Linux server operating system with latest kernel.

       > Create Disk Partition for zimbra mail server.

       > Selinux, IP-tables, Hosts name & Ethernet Configure.

       > Zimbra 8 mail server installation on Linux server.

       > Install & configure server based antivirus and spam guard.

       > Configure admin control panel & User longing panel.

       > Configure incoming mail system with mail hidden bcc.

       > Configure outgoing mail system with mail hidden bcc.

       > Initial user creation with password

       > Configure mail forwarding or distribution rules.

       > Multiple domain configure.

       > COS Setup, User policies configure.

       > Server firewall configure with DDos attack protecting security.

       > Configure & set zimbra user mail sending and receiving limit using cbpolicyd.

       > Configure email incoming & outgoing relaying system with SMTP

              Server/Barracuda.

       > Explain & implement DNS record DKIM/SPF/DMARC/PTR with RBL listing.

       > Explain about domain and ip reputation check & improvement.

       > Zimbra server log files management & Troubleshooting.

       > Extra explain & working with VMware workstation / ESXI 6 and remote access.

       > Explain of how to configure MS Outlook ,Eduard,Thunderbird, Mobile Mail

              Exchanger.

       > Email user management Software configure (Port=110,143,25,995,993,465,587

              With SSL/TLS).


Part-2 Zimbra Backup Server / SMTP-MX Relay Training: 

       1. Preparing to Backup server same as pert-1 zimbra server configuration.

       2. Schedule base incremental data backpacking from running zimbra server to

          Backup zimbra server (external & internal)(daily, weekly, monthly).

       3. Data restoring from postfix or exim.

       4. Data restore with existing user's data.

       5. Resetting user's Permissions

       6. Disaster recovery.

       7. Explain: How to configuration SMTP/ MX Server / Anti Spam Barracuda.

       8. Explain : How to find spammer email id from log file with auto scripting

               notification.

       9. Zimbra server log files management & Troubleshooting. ​

       Course Duration: 24 hours -30 hours (8/10 Days x 3 Hours)
                                       
                                          Friday Or Saturday Evening.


        >> Zimbra & Zimbra Backup Server configure hand of training
              
              100% data save guaranty.


Facilities : 1) Practice with real domain & real IP From VPS Server.

                    2) During training, you can access the service through SSH from
anywhere.

                    3) Every day training content providing to via email.

                    4) No need to carry a laptop.

Please Contact for Details  us:
System Engineer & Administrator
Zimbra/Postfix/VMware/Expert-RHCSA,RHCE


Address: House # 5/1, Primary School Road, Kallayenpur, Mirpur, Dhaka-1207, Bangladesh.
Email : info@serversolutinobd.com, serversolutionbd@gmail.com
Cell : 01719-322424

Wednesday, February 6, 2013

Zimbra Mail Server Configure in Bangladesh

Zimbra 8 Mail server : www.serversolutionbd.com



Supported Operating System : Centos 6.8
Platform: 64-bit supported Processor
RAM : 4GB or 8GB
Hard Disk :  500GB x 2 or 1TB x 2 (Hardware RAID)
Need One Real IP address
512kbps dedicate bandwidth

Multi-Server Environment Run Steps
  • Antispam         Service
  • Antivirus          Service
  • Amavis            Service
  • LDAP              Service
  • Logger            Service
  • Mailbox            Service
  • MTA                Service
  • Snmp               Service
  • Spell                Service
  • Stats                Service
  • Zmconfig          Service
  • Opendkim        Service
  • Zimlet               Service
  • Memcached     Service
  • ZimbraAdmin   Service
   
Port Access Services (Outlook Express, Eudora, iPhone, Blacbarry, Smart phone);

To enable SASL mechanisms  with Postfix,
Allow SASL auth on port 25: 110 POP3, 443 IMAP, SSL 993 995

Email User Services;
User create unlimited with user account delete, modify, active, close features

Admin & user web interface:
admin and user web interface available and easily to manage user mail box quota.

Mail hosting capacity : 3 domain  (not support webpage hosting)

Operating Systems and Browsers supported with the Zimbra 8 Web Client

Window Vista and Windows 7/8/10
IE 8.0 and higher (IE 8 for XP, 9+ for Vista/Win7)
Firefox (latest stable version
• Safari (latest stable version
• Chrome (Latest stable version

Mac OS X 10.5 "Leopard", 10.6 "Snow Leopard", 10.7 "Lion"
Firefox (latest stable version on 5/4)
Safari (latest stable version on 5/4)
• Chrome (Latest stable version on 5/4)

Verify Certificates Expiration Date
ZCS 8.0.x requires a valid self-signed or commercial SSL certificate for
communication between some components. The self-signed certificates that
are automatically created by the ZCS install have a default expiration in ZCS
7.2 or earlier of 365 days, beginning with ZCS 8.6 default expiration is 1825
days (5 years).

One Time Configuration:

  • Installation of Linux server operating system with latest karnel.
  • Zimbra 8 mail server installation on Linux server.
  • Configure Admin Control Panel & user longing panel
  • Configure incoming mail system
  • Configure outgoing mail system
  • Initial user creation with password
  • Basic server security and firewall rules configuration on Linux server.
  • Removed existing partition from hard disk
  • Format and install latest version server operating system
  • Install & configure server based antivirus and spam guard
  • Support Outlook Express base Email user management software
  • Configure mail forwarding rules
  • Configure IP Tables for server security 
  • Restore Old emails from postfix, exim etc. 100% Guarantee.
>> Zimbra & Zimbra Backup Server configure hand of training.
  .............................100% data save guaranty.


Please Contract  us:
System Engineer & Administrator
Zimbra/Postfix/VMware/Expert-RHCSA,RHCE

Address: House # 5/1, Primary School Road, Kallayenpur, Mirpur, Dhaka-1207, Bangladesh.
Email : info@serversolutinobd.com, serversolutionbd@gmail.com
Cell : 01719-322424

Monday, September 10, 2012

Mikrotik Router Solutions in Bangladesh



Mikrotik Router & Price in Dhaka, Bangladesh

Features of Mikrotik Router:

In Course of time, corporate network has become complex due to the increasing dependency on network
for various solutions. These solutions make business and Communication easier, professional and cost
effective. On the other hand, without right solutions network become more complex to maintain. Mikrotik
has introduced total network based solutions in a single unit. i. e. Mikrotik Router OS, which is
dependable, easy to maintain by network administrator.
  •  Bandwidth Controller:
a. Bandwidth can be controlled perfectly on single IP or on total subnet with burst limit, day &
time options, night package.
b. It also works as NAT server for private IP.
c. IP may restrict against MAC address,
d. Service wise (like mailing, browsing) bandwidth control.
e. DHCP server may configure,
f. MRTG can generate on each IP.
g. Running Speed (live) on each IP can show including total data uploaded / downloaded.
h. Cache DNS and transparent proxy can be configured.
i. Easy remote administration from windows PC without previous experience
  •  Web Proxy
  •  Virus Port Block
  •  eBGP & iBGP:
       i) For dynamic routing
       ii) For auto redundancy with load balance.
  •  Link redundancies between 2 or more links:
  •  Load balance between two uplink of different ISP:
  • Authentication & Billing Solution:
         i) Prepaid card & Pin generates.
         ii) Post paid billing solution for broad band user.
        iii) Hotspot Solutions.
  •  Virtual Private Networking (VPN) Solution.
  •  HTTP Filtering.
  •  PPPoE:
  •  Log Management:
  • Firewall:
  •  Mangle
  •  Live Port Monitoring
  • EOIP, Bonding, MPLS Tunnel
  •  Backup and Maintenance:
  •   Layer 2, Layer 3
  •  Link Up- Down Alarm
  •  Self Security of VPN Router
  •  Security of VPN Tunnel.
  •  Security of Administration Password.
Mikrotik Router Model & Price:

RB 450G for 8 Mb Standard
5 Gigabit ports level 5 License
500 users login capable simultaneously.

Price = 11,000/- TK
Others Price.
Mikrotik Router Price

No
                                      Description/ Model
Price (Taka)


1

CCR1036-8G-2S+EM, CPU nominal frequency 1.2 GHz, CPU core count 36, 10/100/1000 Ethernet ports 8, SFp ports and 12individual gigabit Ethernet ports, a serial console cable and a USB port. Two SODIMM slots, by default it is shipped with 16GB of RAM, level 6 License, Unlimited User login Capable.1U rack mount case.


108,000/-




2

CCR1036-12G-4S-EM, 4 SFp ports and 12individual gigabit Ethernet ports, a serial console cable and a USB port. Two SODIMM slots, by default it is shipped with 16GB of RAM, level 6 License, Unlimited User login Capable.1U rack mount case.



1,00000/-

3

CCR1036-12G-4S, 4 SFp ports and 12individual gigabit ethernet ports, a serial console cable and a USB port. Two SODIMM slots, by default it is shipped with 4GB of RAM, level 6 License, Unlimited User login Capable.1U rack mount case.



82,000/-
4

CCR1016-12G, 12individual gigabit ethernet ports, two SODIMM slots, by default it is shipped with 2GB of RAM, Level 6 License, and Unlimited User login Capable.1U rack mount case.



55,000/-
5

RB1100AHX2, 13 individual gigabit Ethernet ports, two-5 port switch group includes Ethernet bypass capability, 2GB of SODIMM RAM, one microSD card slots, a beeper and a serial port.  PowerPC P2020 dual core 1066MHz network CPU with IPsec accelerator .Level 6 License.



34,000/-
6
CRS125-24G-1S-2HnD-IN, 10/100/1000 Ethernet ports-24 and SFP ports-1, RAM-128MB, CPU nominal frequency- 600 MHz, Wireless standards- 802.11b/g/n, CPU- AR9344-DC3A-R, microUSB type AB and Level 5 License. wifi suppoted


not available
7

CRS125-24G-1S-RM, 10/100/1000 Ethernet ports-24 and RAM-128MB, CPU nominal frequency- 600 MHz, CPU core count-1, CPU- AR9344-DC3A-R, microUSB type AB and Level 5 License.



22,000/-
8

RB2011UAS-2HnD-IN, Five Gigabit LAN ports, five Fast Ethernet LAN ports and SFP cage. (SFP module not Included) 2.4Ghz 802.11bgn wireless AP, RJ45 serial port, microUSB port and Level 5 License. wifi suppoted


14,000/-
9

RB2011UAS-RM, Five Gigabit LAN ports and Five Fast Ethernet LAN ports, but also has RJ45 serial port, ports 10, rack mountable, usb, sfp port, touch screen monitor microUSB port and Level 5 License.



15,000/-
10

RB1100AH, 13 individual gigabit port, two-5 port switch group includes Ethernet bypass capability, SODIMM RAM slot for upgradable memory, one microSD card slots, a beeper and a serial port.  level 6  License, Unlimited User login Capable.1U aluminum rack mount case


not available
11

RB 1200, 10 gigabit port license level 6. 50 Mbps load capacity Unlimited User login Capable,1U aluminum rack mount case

not available
12

RB 450G for 8 Mb Standard, CPU nominal frequency-680 MHz,RAM-256MB, 5 Gigabit ports level 5 License 500 users login capable simultaneously. 

11,000/-
13

RB951G-2HnD, Five Gigabit Ethernet, one USB 2.0 port and a high power 2.4GHz 1000mW 802.11b/g/n wireless AP with antennas built in. level 4License. wifi supported



8,000/-
14

RB751G-2HnD for 2 Mb Standard Level 4License 200 users login capable simultaneously. Perfect SOHO AP five Gigabit Ethernet, usb,1W 2.4Ghz wireless high power 1W 802.11b/g/n wireless AP with antennas built in. wifi supported



N/A
15

RB751U-2HnD for 1.5 Mb Standard level 4License,200 users login capable simultaneously. perfect SOHO AP, five Ethernet port,1W 2.4Ghz wireless high power 1W 802.11b/g/n wireless AP with antennas built in USB. wifi supported



N/A
16

RB 750GL for 2 Mb Standard 5   Gigabit ports level 4License ,200 users login capable simultaneously


7,000/-
17
RB951Ui-2HnD is a wireless SOHO AP with a new generation Atheros CPU and more processing power RAM 128. It has five Ethernet ports, one USB 2.0 port and a high power 2.4GHz 1000mW 802.11b/g/n wireless AP with antennas built in. License level L4. wifi supported.

7,500/-
18

RB951-2n, for 2 Mb Standard Five Ethernet ports and a 802.11b/g/n wireless AP with an antenna built in. level 4License,200 users login capable simultaneously. wifi supported

5,000/-
19

RB 750 for CPU nominal frequency-400 MHz, RAM-32, 2 Mb Standard 10/100 ports level 4License200 user’s login capable simultaneously.

5,000/-

.
.

Please Contract  for Mikrotik Router or Solutions 

www.serversolutionbd.com
 

Address: House # 5/1, Primary School Road, Kallayenpur, Mirpur, Dhaka-1207, Bangladesh.

Email : info@serversolutinobd.com, serversolutionbd@gmail.com
Cell : 01719-322424