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Questions tagged [zimbra]

Zimbra Collaboration Suite (ZCS) is a groupware product created by Zimbra, Inc., located in Palo Alto, California, USA.

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Milter: from=<address@domain.com> reject=451 4.3.2 Please try again later

We have a Zimbra mail server and we are facing some issues from other MTAs trying to verify recipients. The other MTA (spam filtering, etc.) is getting the following error: Milter: from=<address@...
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87 views

Postfix Conditional redirects

I have a tricky one here! I have a dinamic list of some... 3000 email addresses that I need to filter on Postfix. I need that if any of these addresses sends an email to (support@mydomain.com or ...
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1answer
79 views

Postfix DDoS mitigation: how to whitelist IPs for IMAP access to a single mailbox

Does (Zimbra using) Postfix have an option to whitelist IPs or domains for IMAP logins for a specific mailbox only? This is what we would like to achieve: all IPs can open an IMAP connection on port ...
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1answer
753 views

Setup policyd on Zimbra 8.8.x to rate limit the number of messages each account can send with smtp-auth

I'm running Zimbra 8.8.9 and I'm trying to rate limit the number of messages that a single user can send over smtp after authenticating with smtp-auth. The purpose is to limit the damage in case one ...
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129 views

Fail2Ban failregex to block bulk spam from external ips

I need to build a failregex for fail2ban, to block bulk spam from external ips. I would like to build it based on this piece of the log: Oct 4 08:53:08 mail postfix/smtpd[44304]: 401E438E25DC: ...
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1answer
139 views

zmconfigd service failed after trying to do Relay per domain

I was trying to do mail relay per domain in Zimbra mail server using this documentation After I done the changes mentioned "ZCS 8.8 instructions" section and try to restart the services of zimbra ...
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1answer
335 views

How to enable email relay in Zimbra in same domain, sent from O365

So i have to use a shared domain during migration from Zimbra to O365. MX points to Zimbra, but is also configured to enable outgoin emails from O365 to the world in the same domain. I've configured ...
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47 views

Mail clients circumventing Postfix antispoofing through IMF messages

I'm running Zimbra 8.6 Network Edition and I'm trying to prevent compromised mailboxes on my platform from spoofing other domains on the same platform. I've enforced reject_sender_login_mismatch in ...
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174 views

zimbra/postfix: unreasonable virtual_alias_maps map nesting

I have pretty good working zimbra configuration of zimbra. Recently I've noticed some problem: If someone sends e-mail to address that is wrong in log I can see unreasonable virtual_alias_maps map ...
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1answer
471 views

Postfix DSN=5.0.0 (domain.com) status=bounced

I installed and configured the groupware ZIMBRA on an Ubuntu 16.04 machine. The mails between our company's network (@abc.de) and ZIMBRA (@123.de) works fine. Since we wanted to test ZIMBRA, we dug up ...
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204 views

Zimbra Audit logs of password change

Is there a way to check Zimbra Collabotation suit for all password change date and not the last password change date. Already looked at https://wiki.zimbra.com/wiki/...
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2answers
403 views

Zimbra server compromised - how to investigate

We have a zimbra email server and one of the email accounts was compromised. The problem we have now is that a lot of spams are sent from that server and we cannot identify which account is ...
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1answer
240 views

Zimbra upgrade from 8.0.6 to 8.8.6

I just inherited a old single-server Zimbra 8.0.6 installation running on 64-bit CentOS 6.5. Being both the OS and Zimbra so old, I plan to update at the next maintenance window. However I would like ...
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1answer
546 views

Zimbra (open source) how can I perform a backup?

Good day everyone So I am trying to perform a backup on out zimbra server and I found documentation (Zimbra Backup Proceedures ) and realised that the scripts aren't working correctly. Scripts from ...
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1answer
1k views

Running Cron every 2 weeks on saturday [duplicate]

we have a cron job that run every Saturday at 01:00 (0 1 * * 6) we want to modified to run every 2 weeks on Saturday at 01:00. Thanks.
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1answer
1k views

Postfix rejecting my SMTP client

I am writing a JavaMail client (running in a GlassFish 4 server) and I have been unable to get my Zimbra ZCS server to accept the SMTP session. Invariably I get the following error in zimbra.log: ...
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990 views

Which parameters of zimbra or postfix limit the number or rate of emailing

I have a email system using zimbra opensource. My system have 2 MTA server and relay outbound to a Barracuda Spam Gateway. The follow send outbound email: Client --(1)--> MTA --(2)--> Barracuda --(3)...
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284 views

Zimbra with multiple domains - SPAM

I have a zimbra installed and working fine. The main domain is mbox.dominiocorp.com.br (fictitious).. I have SPF, DKIM, _dmarc, reverse configured and tested. The emails of the domain mbox.dominiocorp....
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1answer
83 views

Google Safe Browsing detect Zimbra as phishing (or deceptive) site

Since today, a (relatively old) Zimbra installation of a specific customer is detected by Google Safe Browsing as a phishing/deceptive site, with the classical red screen and all. We suspect an email ...
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1answer
746 views

What are all these DGRAM items in NETSTAT?

I am assigned a server that has been sending tons of data ourside and isn't used. So, it is most likely compromised. Nothing really seems to be out of order on the server except, they're miles and ...
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1answer
307 views

Zimbra: move email to another user

As title says. I need to move all emails in a mailbox to another user. The original user has resigned, and we have assigned his current position to another guy. So I made a folder with the old guy's ...
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2answers
673 views

Is it possible to use wildcards when blocking sub-domains on a Zimbra server (postfix)

I have a zimbra 8.7.11 community edition server running on Ubuntu 14.04.5 LTS. Sometimes, individual SMTP servers from very large domains, such as yahoo.com or hotmail.com get listed in DNS RBLs. I ...
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1answer
574 views

What is the correct format for blocking users at the postfix level on a zimbra server?

I have a zimbra 8.7.11 community edition server running on Ubuntu 14.04.5 LTS. This particular mail server is getting attacked by @qq.com domain. The messages are randomized so that the from address ...
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0answers
2k views

Zimbra 8.7.1 : Connect: Unable to determine enabled services from ldap

I'm currently moving my zimbra from Ubuntu 12.04 to Ubuntu 14.04 On both sides it's a zimbra OSE 8.7.1, I already did all these steps : Backuping zimbra with specificities : include all hidden ...
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633 views

Can I back up a Zimbra mail server by just using rsync?

I inherited management of a zimbra server whose backup system is in an unknown state. Looking at the manuals zimbra provides commands to perform backups at the application level which would be great ...
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2answers
3k views

How to change ip address used by Zimbra zcs 8.6

For postfix I can change the binded ip by changing parameter like smtp_bind_address = 192.168.146.197 in main.cf How to change the ip address binded by zimbra(server have multi ip's) ?
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2answers
2k views

Addition incoming SMTP listen on port 2525 with Zimbra 8

We use some service on Google Cloud, but they block out-going port 25 / 465 / 587, I need add a smtp port on our Zimbra server that listening on port 2525 for these service can send email. My Zimbra ...
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2answers
143 views

Connecting to Alfresco using IMAP from Zimbra webclient

For one of our clients, we need to establish IMAP protocol between the mail server and an ALfresco server (EDMS server). The objectif is : from an email, a user can access to his files in the server, ...
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1answer
479 views

Zimbra 8.7 invalid HELO on SMTP relay

I recently upgraded to Zimbra 8.7. We provide clients Authenticated SMTP relay, but several have older Outlook apps that are not sending a valid HELO in their connection. In 7.x versions of Zimbra, ...
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2answers
2k views

Zimbra learning Spam

We are using a Zimbra intallation on the version 8.6.0 and have diffuclty with the Spam recognition. It's an installation all on one single server and we collected in the mean time over 1000 Spam ...
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1answer
392 views

Zimbra rebuild redolog folder

I have a mailserver with zimbra 8.6.0_ga 1153 version. I have a problem with redolog folder. The partition with redolog data is corrupted and is not recoverable. It is possible regenerate redolog ...
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2answers
697 views

zimbra: timezone not changing despite multiple attempts

I am using Zimbra ZCS8 for my company's email service. When any user receives or sends an email, the timezone being used is GMT-10. My timezone (and the one I need in the email server) is GMT-5. ...
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0answers
114 views

Forward all ZIP attachments to a single central address

Lately my server has been getting pounded with spam containing ZIP attachments (presumably infected with something). They go to most of our users, and the fear is someone will open one. Users are ...
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2answers
2k views

Upgrading Zimbra and your OS at the same time

I've recently had some problems regarding upgrading Zimbra while also upgrading my OS at the same time. To be more specific: I wanted to upgrade Zimbra Open Source Edition from 8.0.5 to 8.6 and at the ...
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132 views

Zimbra/Postfix on ubuntu stoped receiving emails from outside. Help to confirm this is not ISP blocking incoming port 25

I'm using zimbra on ubuntu as an email server behind a zentyal firewall. Im having problem Zimbra stopped receiving email from outside. Internal emails or outgoing is fine. ISP blocks all outgoing 25,...
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3answers
2k views

Whitelist Single (Spoofed) Email Address on Zimbra/Postfix

I have setup Zimbra to reject emails originating from users that are not logged in (spoofed emails). I have this setup in /opt/zimbra/conf/domainrestrict This has been working great for a long ...
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1answer
2k views

How to change logo from server mail Zimbra

Zimbra version Release 8.7.0_GA_1659.RHEL6_64_20160628192545 RHEL6_64 FOSS edition. I have a mail server Zimbra and i need to change the logo of login page. I have edited in directory /opt/zimbra/...
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1answer
1k views

Zimbra Anonymous TLS connections

We are running a Zimbra 8.6.0 mail server on an Ubuntu box. In mail log I am seeing some Anonymous TLS connection made to our server mail server.Is this something I should be worried. Jun 11 12:14:15 ...
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3answers
847 views

Testing Zimbra email routing

I am an experienced Exim user and just recently testing Zimbra Open Source, and I am loving it already. However, I am used to this command whenever I wanted to test email routing in the email server, ...
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1answer
1k views

Using Amazon SES to send mails to specific domains in Zimbra

We are managing a Zimbra mail server Community edition. Since the IP Address reputation of our ISP is a bit poor, select domains (mail servers) are either blocking our emails which is resulting in ...
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1answer
536 views

zimbra mail quota view command line

I am using zimbra 8.5. When i am trying to view the mail quota of all users from the admin GUI, the whole system hangs and we will have to restart the system to make it work again. I searched in ...
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1answer
99 views

Migrate/transfer from zimbra collaboration server GA 8.0.0 (zcs) to recent zimbra(zcs) GA

Im using zimbra zcs 8.0.0 GA on ubuntu 12.04LTS , is it possible to migrate the settings/mailboxes from old zimbra to "new zimbra server". The new server have ubuntu 14.04.4 x64bit installed with ...
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2answers
2k views

Zimbra contacts synchronization CardDAV (CardBook)

has anymbody experience with configuration for synchronization contacts between Zimbra Community Edition and multiple devices with multiple clients MS Outlook/Thunderbird/FossaMail/K9? Is needed some ...
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2answers
3k views

Zimbra (postfix) receives email from “my domain” but from external unknown server

I've installed a Zimbra 8.0.7, recently the server have become to deliver emails from accounts that belong to my domain ("example.com") but this mails come from external smtps, for example: 1. the ...
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1answer
1k views

How to export address book from Zimbra?

I want to export all users' contacts (Address book) in csv format for migration purpose. Zimbra is runing on ubuntu and I want to do this from cli. How shall I proceed? I have refereed to this link ...
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1answer
817 views

Zimbra and cross-origin framing

Let's say that I have a Zimbra webmail accessible at https://mail.example.com. I also have a web app at https://app.example.com. On one of the app's pages I am trying to embed the webmail: <iframe ...
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2answers
2k views

Prevent MAILER-DAEMON NDRs from deferring in Barracuda

Mail Server: Zimbra 6.0.9 Spam-Firewall: Barracuda Spam Firewall 300 (Firmware v6.1.5.006) All spam firewalls only work so well, and unfortunately some spam will come through. Incoming spam will ...
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1answer
784 views

zimbra export messages in tar.gz by ID

I need delete old messages from zimbra account. by command: zmmailbox -z -m mail@domain.com s -t message -l 999 "before:1/1/14" |awk '{ if (NR!=1) {print}}'| grep mess | awk '{ print $2 "," }' | tr ...
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1answer
1k views

Zimbra Admin Page White Screen

I'm having an issue where my zimbra admin page (https://zimbraurl:7071/zimbraAdmin) is only showing a white page, F12 is giving me this error. I'm running version 8.6.0_GA_1191, I've gone though the ...
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1answer
45 views

What informations can be retrieved about a mail that was not delivered?

During the migration from our old mail server to Zimbra 8.6, we created a number of Distribution Lists, however, for some reason (our fault probably), one of those list which was supposed to hold 4 ...