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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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DKIM Validating Signature result = fail, Zimbra Mail Server using Google SMTP

I have a Zimbra Mail Server Release 8.8.15, so using a Gmail Free SMTP. I've already configure the DKIM using zmdkimkeyutl to generate the DKIM Record and Save in the Domain Provider. Also I'm already ...
mxzyy's user avatar
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35 views

Zimbra with multiple domains certificate not working

I have installed & configured Zimbra OSE 8.8.15 on one Server, but I've already configured multiple domains, domain1 & domain2 which is pointing at the Zimbra server, this is working perfectly ...
mxzyy's user avatar
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1 vote
1 answer
584 views

Exchange online and zimbra on premise mail server sharing same domain

Am planning to Migrate my Zimbra mail server to Exchange Online but in the meantime, I need to configure some users (30 users) on Exchange Online and the rest on the Zimbra mail server version 8.8.15 (...
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68 views

Extract GALsync contact photos from Zimbra server

The scenario: I'm trying to write a shell script that automates the creation of email signatures on a Zimbra server. Most users have added their information and their photo to the domain's GALsync ...
thebart_the's user avatar
2 votes
1 answer
547 views

Possible to parse ldapsearch output?

I have an ldapsearch query to pull some data of an email system, I am trying to parse the data into something I can analyze in a table/flat file, and generate reports on the accounts. Sample of the ...
dj423's user avatar
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1 answer
283 views

Renewing cert on Zimbra mail server broke Outlook

all. Strange problem. We renewed our wildcard cert on the Zimbra email server over the weekend, and on Monday several users reported their Outlook no longer connected to the server (fortunately the ...
AaplMike's user avatar
  • 179
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1 answer
723 views

How to backup zimbra mail server?

I am newbie in linux. I am recently trying to backup zimbra mail server for making a backup server by rsync tool. I am copying /opt/zimbra folder but it is always giving errors. I am using rsync -...
Hasan Zafrul's user avatar
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2k views

Installing zimbra on ubuntu

Error: no such file ":Aborting, unknown platform: UBUNTUUNKNOWN_64" i was trying to install zimbra on ubuntu 20.04. Can someone help me with this please?
jogGer's user avatar
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-2 votes
2 answers
113 views

Can one machine virtually host a DNS server and an Email server?

I have one question: is it manageable to host a DNS server and an Email server on one machine? Im using proxmox as virtualization Zimbra as the email server
JohnIT's user avatar
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203 views

Postfix on a Zimbra Collaborative Suite server - error in mail.log

Fist time posting on this site, so please forgive if I'm not following the standard procedure... ;-) I have a ZCS (Zimbra Collaborative Suite) server that runs on Ubuntu 16.04.7 LTS (GNU/Linux 4.4.0-...
Bernard's user avatar
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1 vote
1 answer
3k views

Zimbra Does not send Email (local and External)

So i managed to get the Zimbra installed today, and Its on here https://mail.betheluniversityeu.gq:7071/zimbraAdmin/ i am using Digital ocean as VPS to run the mailserver I have this issue, when I ...
Joe Frey's user avatar
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1 answer
832 views

Zimbra Does not send email to local and External Account

i am getting this Error Mar 30 06:09:28 betheluniversityeu postfix/smtp[6381]: 0EC7DFC5EB: to=<******@hotmail.com>, relay=none, delay=0.02, delays=0.01/0.01/0/0, dsn=4.4.3, status=deferred (Host ...
Joe Frey's user avatar
0 votes
1 answer
492 views

xlsx extension file blocked in zimbra

So the issue is that i have been trying to send a mail from my server with xlsx file extension attachment but zimbra rejects the mail giving a message content is band BANNED CONTENTS ALERT Our ...
ram khanal's user avatar
1 vote
0 answers
197 views

Zimbra sends alarms for service restarts by its cronjobs

I'm trying to solve an issue where we get ~8 nightly mails from Zimbra OSE 8. They'll look i.e. like this one: Dec 21 00:46:15 hostname zmconfigd[16202]: Service status change: exhostname amavis ...
Florian Heigl's user avatar
0 votes
1 answer
179 views

How to send an email on behalf of user

I have two zimbra mail servers, on server-1 I have one domain with accounts. I want to be allowed to send email from server2, on behalf of [email protected] that I dont have on server2, but this ...
madial9663's user avatar
1 vote
1 answer
1k 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 ...
logax's user avatar
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393 views

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 ...
logax's user avatar
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1 answer
2k 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 ...
MaxAuray's user avatar
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2 votes
0 answers
68 views

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-
John The Hacker's user avatar
4 votes
1 answer
948 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 ...
John The Hacker's user avatar
0 votes
1 answer
992 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 ...
Dreameyes86's user avatar
0 votes
1 answer
694 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 ...
Louis Waweru's user avatar
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1 answer
715 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 ...
sttris's user avatar
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0 answers
358 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 ...
Brent's user avatar
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0 answers
631 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 ...
themetman's user avatar
0 votes
1 answer
961 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 ...
Leo's user avatar
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0 votes
0 answers
1k views

Milter: from=<[email protected]> 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@...
jlanza's user avatar
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2 votes
0 answers
384 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 ([email protected] or ...
Iñigo InThe Cloud's user avatar
1 vote
1 answer
747 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 ...
imapq's user avatar
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1 vote
1 answer
9k 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 ...
Luca Gibelli's user avatar
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1 vote
1 answer
2k 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 ...
Kerolos William's user avatar
1 vote
1 answer
3k 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 ...
kjubus's user avatar
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1 vote
0 answers
107 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 ...
dorux's user avatar
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0 votes
1 answer
2k 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 ...
kaisa's user avatar
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2 votes
2 answers
2k 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 ...
Milos Cuculovic's user avatar
0 votes
1 answer
608 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 ...
shodanshok's user avatar
0 votes
1 answer
2k 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 ...
LUser's user avatar
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-2 votes
1 answer
4k 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.
xzeneize's user avatar
0 votes
1 answer
4k 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: ...
AlanObject's user avatar
1 vote
1 answer
1k 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....
Christovam's user avatar
0 votes
1 answer
141 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 ...
shodanshok's user avatar
1 vote
1 answer
4k 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 ...
LUser's user avatar
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0 votes
1 answer
1k 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 ...
prd's user avatar
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1 vote
2 answers
3k 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 ...
David Killingsworth's user avatar
1 vote
1 answer
2k 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 ...
David Killingsworth's user avatar
2 votes
2 answers
11k 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 ...
Rezopac's user avatar
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0 votes
3 answers
2k 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 ...
AlanObject's user avatar
1 vote
3 answers
13k 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) ?
sherpaurgen's user avatar
-1 votes
2 answers
5k 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 ...
NothingCtrl's user avatar
0 votes
2 answers
402 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, ...
Kaabar Bilel's user avatar

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