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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Zimbra - Ajax Webmail slow/not loading

The issue: We are facing a somewhat strange issue regarding the Zimbra Ajax webmail interface. Sometimes it loads, although most times it won’t (the html one always loads). Most of the times it ...
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How to blacklist or reject external mail ids in fetchmail delivery?

We have configured fetchmail to fetch mails from catchall server and delivering to domain ids. If we send mail to online domain user c@a.com along with local zimbra user a@a.com and b@a.com means ...
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61 views

How to use SES as an outbound relay for Postfix

I'm looking for a way to both receive emails and then store them in s3 at the same time while using ses, i found out that it can't be done unless i do some way of forwarding, so, what i did was that i ...
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A way to forward all incoming mails to another adresss in Posfix/Zimbra

I'm looking for a way to forward all incoming mails to an external mail using postfix/zimbra, i tried "always bcc" but it forwards all mails including outgoing mails, but i'm looking for only incoming ...
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62 views

SOLVED: Amavis and dkim signature on incoming mails: header.s ignored

I am a little bit confused with how amavis process incoming mails. The Postfix service on my Zimbra server is configured to sign outgoing mails. And it works like a charm. Problem is mails sent to ...
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I'm getting error during HA configuration for KVM on CentOS

After adding all nodes and resource agents in my cluster I'm getting this error please someone suggest me something. Please take a look in the image-
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1answer
210 views

HA configuration for KVM machines installed on shared iSCSI storage

My requirement is to provide HA to a Zimbra Server. We want Zimbra files to be installed in a Netapp SAN which is providing around 5.7 TB as a SAN iSCI Drive. Since Netapp comes in with Dual ...
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1answer
145 views

Postfix (maildir and shadow file) to Zimbra 8.8.15 migration

Hello guys as the title is saying Im trying to migrate from Postfix (users, passwords, mailbox) to Zimbra. I see architecture changed over the years. Do you know a script that does the job or how I ...
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131 views

Z-push+Zimbra+Apache redirect to https and keep z-push working

I'm running z-push ver 2.5.1, latest Zimbra open source and latest z-push backend on the same server. Everything is working fine, but I need a small tweak for my apache. What I want to see is - when ...
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121 views

Zimbra Split domain with external Relay

I Have Three servers. O365 Mail server (domain = example.com) Postfix as a Relay(Can communicate with O365 server and Zimbra mail server. domain = example.com) Zimbra mail server(configure external ...
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18 views

Collaborative Inbox account with Zimbra

I need to create a collaborative email system with Zimbra where: I have 20 users with a personal account in which they receive mail from a shared account (eg: info@contoso.com) They can each organize ...
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50 views

Changing Password Policy in ZImbra

I just noticed how bad the password policy is on a mailserver: If I change these values for the default Class of Service, will existing users that don't meet the requirements be able to log in, or ...
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A long time to write to Sent folder over Imap - Zimbra

It's Imap or Zimbra or Thunderbird issue as I think. I've got problem with few users using Thunderbird on Windows machines. When they send e-mail they have to wait very long time until Thunderbird ...
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1answer
147 views

Zimbra + Fetchmail

I’m migrating from an old Merak mail server to Zimbra. I has to be done without any downtime. My idea was to: 1) Make zimbra work as a relay for the current server (zimbra can send mail through the ...
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184 views

Zimbra Google suite on Split Domain

We are trying to set up Zimbra Community Edition along with Google G Suite on a split domain mail system. We have Google as primary, while Zimbra is secondary. We have referred this document or the ...
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Zimbra + POP connector

I'm migrating the my mail server from a really outdated Merak server to Zimbra Colab 8.8. The current configuration keeps the mail on the ISP's server and uses POPBeamer to download only mail for ...
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77 views

Zimbra Imap Proxy

Recently upgraded from Zimbra 8.6.0 to 8.8.15. Now the IMAP and POP ports aren't proxying correctly. (or at all). If I log in to the server and telnet localhost 7143 it connects. If I telnet ...
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Single Sign On on Windows Machine

I just configured Single Sign On to my internal Webmail Server Zimbra, everything like Intranet Zone, and autologin in intranet zone is configured, Firefox is also configured with needed network....
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129 views

Split Delivery between G Suite Mail in Zimbra server found bounce back email but not show detail

I have setup Split Email Delivery between Google Apps(GSuite Mail) and Zimbra server Gsuite Mail : admin@sgfcap.com Zimbra Mail : zimbra@sgfcap.com TEST CASE : 1 I try send email from external ...
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190 views

Port 25 Connections Unknown - Should I DROP them?

I have a Zimbra Mail Server setup, and have noticed quite a few connection attempts on port 25 which are rejected because the reverse lookup fails. Here is an example output: Apr 30 06:04:48 mx1 ...
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1answer
265 views

Zimbra behind a Apache Reverse Proxy

I mention my network architecture. My service provider has not made zone delegations to manage my DNS, and currently I only have one PTR record pointing to one of my servers which has a real IP on ...
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340 views

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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123 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
241 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
4k 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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1answer
839 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
840 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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58 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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1answer
1k 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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2answers
998 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
398 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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929 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
2k 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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2k 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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587 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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101 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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2k 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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589 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
1k 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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1k 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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1answer
4k 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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3answers
1k 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
6k 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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3k 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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241 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
780 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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3k 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
553 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
2k 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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132 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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