85 articles on this topic
If you encounter a problem sending mail through zimbra webmail, the error below may appear: method: [unknown] msg: no such message part: 2.2 code: mail.NO_SUCH_PART detail: soap:Sender trace: qtp509886383-3220
If you use ZIMBRA 8.0, which does not yet support per-domain disclaimer configuration (available from 8.5 onward), you can configure it manually as shown below. Enable domain based signature in glob
Configure Blacklist and Whitelist with Amavisd in ZIMBRA instead of Postfix Blacklist/Whitelist. Configuration steps: 1. Edit /opt/zimbra/conf/amavis.conf.in and add the following…
To configure ZIMBRA to reject external email addressed to users in the system, or blacklist email, follow these steps. 1. Configure smtpd_sender_restrictions as shown below.
By default, ZIMBRA emails the system daily report to [email protected]. To send the daily report to a different email address, use the following procedure.
ZIMBRA 8.5 and later changed the configuration for blacklists and whitelists. To add whitelist/blacklist entries, follow these steps. Whitelist: create /opt/zimbra…
If you use RBLs such as spamhaus.org on ZIMBRA to block spam, a customer's mail server may be blacklisted by the RBLs and unable to send to your system after being identified as potential spam.
A new Google Chrome version released on 2 September 2015 caused Zimbra Web Client 8.6, 8.5, and 8.0 to display the mail preview incorrectly, cutting it off instead of filling the screen.
If Zimbra cannot send or receive mail while webmail, POP, and IMAP work normally, check the log for "fatal: Queue report unavailable - mail system is down", as in the example zimbra@zm:~$
A script to list users in every distribution list in the system, showing the results by distribution list, as in this example: ======= GROUP: dist1 ============= user1 ezy, [email protected]
If you install zimbra 8.5.0 on Centos 7 or Red Hat Enterprise 7 and zmconfigd fails to start, as in this example: [zimbra@ezymailhosting ~]$ zmcontrol status Host mail.amarz.ne
EHLO (or HELO) identifies a host at the start of an SMTP protocol connection. In zimbra, you can change the EHLO (or HELO) sent to other smtp servers and set the greeting banner.
You can check the performance of incoming and outgoing email on Zimbra mail by examining its delivery logs, allowing you to analyze system performance and identify which parts take particularly long…
Some Zimbra Desktop users may be unable to start it after updating Windows. Reinstalling Zimbra Desktop does not resolve this problem. How to fix Zimbra Desktop...
The OpenSSL Heartbleed bug (CVE-2014-0160) lets an attacker send a malformed heartbeat message and obtain data stored in the target machine's memory.
The network ports used by Zimbra mail server fall into two groups. 1. External Access - Ports accessed by Clients or services outside the Zimbra system.
If you have upgraded Zimbra Collaboration Server (ZCS) to version 7 and encounter the error below: Table upgrade required. Please do "REPAIR TABLE" (2045019), from mysqlcheck, as in this example: D…
System email on a Zimbra server normally uses the system MTA. To send system mail using the Zimbra mailer instead of the default OS MTA, follow these steps. Backup default OS MTA [root@E
Zimbra webmail supports new email notifications through Yahoo! Browser Plus, as described in How to setting pop-up email notification in Zimbra, but Yahoo! decided to close the project.
Zimbra detects duplicate messages to prevent multiple copies of the same email. This check is enabled by default and can be disabled for the server or individual accounts.
SendmailAnalyzer is a log analysis program that helps administrators examine an overview of incoming and outgoing email in graphs and reports, with hourly, daily, and monthly views.
Zimbra has a Directory Service that supports address books through the ldap protocol, allowing Microsoft Outlook to retrieve address book data from Zimbra.
Zimbra supports sharing a full account, or all folders, from one user to another. The recipient can read and edit the shared account's data as if it were their own.
When SMTP authentication fails in Zimbra for every user and program, check the error log at /var/log/zimbra.log for an error like this: Jul 28 16:34:05 server saslauthd[33294]:
Zimbra supports only a few Linux distributions. One of the supported distributions is the very popular CentOS 6. This article explains how to install CentOS 6.
Zimbra Autocomplete lists email addresses within a domain to help users enter addresses correctly and quickly. It can also be configured to list addresses across all domains.
Zimbra normally scans both internal email between local accounts and external email for spam. Sometimes internal messages are therefore marked as spam.
Zimbra uses ClamAV to scan email for viruses. Its virus database is normally updated regularly, but if updates fail, the database needs to be reset.
Telligent has acquired Zimbra from VMWare to broaden its capabilities. Telligent provides enterprise social collaboration that includes real-time communication.
Zimbra uses a MySQL database to store operational data. Normally, when accessing mysql while logged in as zimbra, you do not need to enter a MySQL password. However, if you need to use MySQL…
If Zimbra cannot receive email while sending works normally, check the log for a message like this: zimbramail postfix/smtpd[xxx]: NOQUEUE: reject: RCPT from mailx.ezylin
When starting the zimbra service, you may encounter the error message below: Starting nginx...nginx: [emerg] socket() [::]:7143 failed (97: Address family not supported by protocol) failed. Starting mta...Faile
A script for checking disk usage on a Zimbra mail server. This check mailbox usage script reports the space used by each user, the assigned Quota, and each user's status.
To change SMTP HELO on a Zimbra server to match the configured MX record, follow the procedure below. Log in as the zimbra user. [root@EzyMailHosting ~]# su - zimbra Change the SMTP HELO setting...
To remove large amounts of email stuck in the system queue after a spammer attack, follow these steps. To delete every email in the system queue, run: [root@EzyMailHosting ~]# /opt/zimb
An iPhone, iPad, or iPod touch can be configured to work fully with Zimbra Mail, synchronizing email, Contact (contacts), and Calendar (appointments) from the system.
The script below lists names, email addresses, Mail Quota, and Account status grouped by domain, providing a quick overview from the command line. Example script output…
Check the account names and email addresses in each distribution list (email) by copying the script below and running it as the zimbra user. #!/bin/sh echo > /tmp/groupslist.tx
Monitoring and checking Zimbra mail services is important for system administrators, who need to learn promptly when the system fails.
To remove Dumpster data for a particular user from the system, run the following commands. Zimbra Collaboration Server 7.x.x zmmailbox -z -m [email protected] mbox [email protected]> emptyDumpster or zmsoap -z
Since zimbra 7.0, a new feature called "Dumpster" has allowed users to recover email, calendars and contacts after they have been deleted from trash, helping them recover data quickly.
Password policies in ZIMBRA can help prevent malicious users from guessing passwords through brute-force attacks, but this approach does not appear to resolve the problem completely.
To make webmail work over http, https, or both, change its operating mode using the steps below. Run the following command to change…
Zimbra provides monitoring that helps check system status and performance effectively, but it lacks monitoring of email sending and receiving statistics that would help administrators.
Zimbra users can configure the removal of email that has stayed in their mailbox too long, similar to removing mail from Trash (normally after more than 30 days). This feature is convenient for users who receive mail and want…
Edit /opt/zimbra/postfix/conf/mail.cf and add the following two lines. sender_bcc_maps = pcre:/opt/zimbra/postfix/conf/archive_mail recipient_bcc_maps = pcre:/opt/zimbra/postfix/conf/archive_mail
When migrating zimbra to a new system or installing a new zimbra server, you can retain spam detection as effective as the previous system.
Email sent by users often ends up in the SPAM folder of recipients on the same Domain or system because the anti-spam system considers the message to resemble SPAM.
Migrating user data from 32-bit Zimbra to 64-bit Zimbra follows a process similar to normal backup and restore of user data in zimbra. Steps for moving user data from a 32-bit machine to a 64-bit machine.
The Zimbra mail server user backup and restore procedure in this article works with both the open source edition and network edition, but cannot be used for version upgrades. Zimbra uses LDAP to store user information…
Zimbra provides distribution lists, or group email, for sending mail to groups, making it convenient to send to all or some recipients using a single email address. Its distribution lists have a limit.
There are several ways to check the Zimbra version: through a web browser, commands, or the installation history file. I have collected these methods for checking the Zimbra version…
Out Of Office lets contacts know you cannot reply to email while on vacation, traveling abroad, or away on business by replying to senders with a predefined message.
Zimbra Webmail has an "Out of Office" feature to keep email communication going by telling contacts that you cannot reply immediately, for example while on vacation or attending a seminar.
Zimbra webmail users can choose the message format for replies and forwarded messages, using the default format or the original message's format. Configure replies and forwards to use the original format.
Zimbra has a calendar system that supports iCalendar, also known as iCal, a file format that lets users send meeting requests by email or share them as .ics files. iCalendar has…
Zimbra Collaboration Suite (ZCS), or Zimbra mail server, uses certificates to secure its operation and communication. If a certificate expires, Zimbra cannot operate, so a new certificate is needed.
Benefits of using Zimbra mail server include the freedom to choose applications and access methods, allowing access anywhere and anytime across operating systems and programs.
Planning storage capacity is important: without estimating the total space required, the system may run out of storage. This article shows how to calculate the requirement.
Yahoo! has discontinued development of Yahoo! Browser Plus, so it can no longer be downloaded. ZebraTray is an alternative program for pop-up notifications of new email. Users of Zimbra webmail...
Zimbra mail lets email owners share email folders with other users. Shared users can have read-only access or permission to manage email in the folder, as specified by the folder owner.
Zimbra webmail lets users change the sender name themselves without an administrator making the change. Follow these steps to change the sender name.
Zimbra webmail blocks automatic loading of external images for user safety. Add sender email addresses or domains to Trusted Address to load images without clicking display image(s).
Use zmcontrol to check the operating status of Zimbra. It can also start and stop Zimbra. To use it, you must first log in as the zimbra user…
Zimbra immediately locks an account after a configured number of failed login attempts to stop hackers repeatedly guessing passwords until they find the right one. If incorrect passwords reach the configured limit…
When you have problems receiving email from outside, it can be difficult to determine where a message sent to your mail server has gone. First check the mail server logs, which can tell you…
Group Contact Lists on a Zimbra mail server are useful for creating contact groups or regularly sending to a particular group, without entering the email address of every recipient.
Task management, also called a to-do-list, is a feature of Zimbra mail server (ZCS) that lets users manage their work and share it with coworkers…
When using the Zimbra Admin console, clicking a menu to open its page may display an error window with this message: " server zimbra.mail.ezymailhosting.com zimbraRemoteManagementPrivateKey
Creating an admin account and granting admin privileges to existing users on a Zimbra mail server. The command for creating an admin account is zmprov ca email password zimbraIsAdminAccount TRUE. An example follows.
If zmsshkeygen cannot generate a key because of a Permission denied error, as in this example: [zimbra@Ezymailhosting bin]$ ./zmsshkeygen Generating public/private dsa key pair. o
If you run Zimbra on OpenVZ, the zimbra service may fail to start with errors like these: Notification skipped. Starting servers...Could not create the Java virtual machine. Unable to deter
For Zimbra web client or Zimbra Desktop, an administrator can change the web interface theme so that all users must use the administrator's specified theme. Steps for changing the theme.
After restarting the zimbra service or rebooting the server, you may encounter the following error when starting ldap: Starting ldap...Done. Unable to determine enabled services from ldap. Enabled services read f
Details of the Zimbra packages. Zimbra Core is the main package installed every time and contains libraries, utilities, monitoring tools, and basic configuration files. Zimbra LDAP provides user authentication.
Zimbra mail server allows users to share calendars with others to make teamwork easier and let employees check the availability of their managers or executives.
To install Zimbra desktop as a mail client in place of Microsoft Outlook, follow these steps: download zimbra desktop from http://www.zimbra.com/downloads/zd-downloads.html. After the download…
You can store contacts in the system instead of writing them on paper, making them easier to find. Follow these steps to add contacts to the system. Select Address book.
Synchronizing calendar, contact, and task data between Microsoft Outlook and our Zimbra server has a limitation because the Funambol Outlook Sync client plugin does not support Outlook.
Zimbra webmail users can easily manage signature templates and create more than one template, which is convenient for users who need multiple signature templates.
Zimbra incoming email forwarding lets users set up forwarding themselves without administrator management, allowing them to freely forward email to other accounts.
Android phones can work fully with Zimbra Mail Server, syncing contacts, calendars and email without installing additional software.
Users of the OpenSource edition of Zimbra can add their Zimbra Calendar to an iPhone by configuring it as follows: go to the system setting menu and select Mail, Contacts, Calendars. Press…
Accessing Email through Web Mail: enter http://webmail.yourdomain.com in a Web browser's URL field to see the login page, then enter your Username.
Zimbra Mail Server installation, troubleshooting, consulting, and training services. Zimbra Mail Server, or Zimbra Collaboration Server (ZCS), is a highly popular Email and Collaboration system.
