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Zimbra Collaboration 8.6 Patch 9 now available (includes fix for CVE-2017-8802). Read the announcement.
Zimbra Collaboration 8.8.7 + Zimbra Connector for Outlook 8.8.7 are available.. Read the announcement.
Are you a Zimbra Developer? You can find some interesting stuff in our Official GitHub: https://github.com/Zimbra and check the Community Projects too: https://github.com/Zimbra-Community/

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Announcements

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Zimbra Collaboration 8.8 is Now Available

Last post by jorgedlcruz « Fri Dec 15, 2017 3:01 pm
Posted in Announcements
Replies: 11
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by jorgedlcruz » Wed Dec 13, 2017 4:50 pm » in Announcements

We are proud to announce the release of Zimbra 8.8. Zimbra Collaboration 8.8 is an exciting release. Some features are only available in the Network...
11 Replies

142838 Views

Last post by jorgedlcruz View the latest post
Fri Dec 15, 2017 3:01 pm
Rspamd: A replacement for Spamassassin & Postscreen

Last post by zimico « Wed Jun 26, 2019 9:06 am
Replies: 183
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by phoenix » Sat Jul 29, 2017 3:19 pm

I've been looking for a suitable replacement for DSPAM, a project that was good but died and became unmaintained then totally removed from Zimbra. In...
183 Replies

463002 Views

Last post by zimico View the latest post
Wed Jun 26, 2019 9:06 am

Topics

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CVE-2019-9670 being actively exploited

Last post by maxxer « Tue Aug 06, 2019 8:55 am
Replies: 239
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Attachment(s) by maxxer » Wed Apr 03, 2019 2:32 pm

As many repoted on IRC, the latest security bug found in Zimbra is being actively exploited in the wild.

It's easy to find a compromised install...
239 Replies

120798 Views

Last post by maxxer View the latest post
Tue Aug 06, 2019 8:55 am
STARTTLS everywhere

Last post by FredKarno « Thu Jul 11, 2019 12:39 pm
Replies: 7
by phoenix » Sat Jun 30, 2018 9:38 am

Following on from their success with Let's Encrypt (and certbot) the Electronic Frontier Foundation have launched an initiative to get all mail...

7 Replies

7430 Views

Last post by FredKarno View the latest post
Thu Jul 11, 2019 12:39 pm
Another Letsencrypt method

Last post by JDunphy « Sat Jul 06, 2019 5:57 pm
Replies: 111
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by JDunphy » Fri Nov 04, 2016 6:52 pm

Thought I would share a method that I prefer over installing and allowing the letsencrypt software to take over my zimbra host. For those users that...
111 Replies

92206 Views

Last post by JDunphy View the latest post
Sat Jul 06, 2019 5:57 pm
A Grafana Dashboard for Zimbra Collaboration

Last post by mrpontifex « Fri May 31, 2019 9:26 am
Replies: 69
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Attachment(s) by jorgedlcruz » Tue Aug 08, 2017 12:50 am

Hello everyone,
I've been working on a spare project using Grafana and Zimbra Collaboration. This dashboard, based on the well-known pflogsumm,...
69 Replies

53668 Views

Last post by mrpontifex View the latest post
Fri May 31, 2019 9:26 am
memcached amplification attack

Last post by davidkillingsworth « Thu May 30, 2019 12:12 pm
Replies: 16
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by reason2008 » Thu Mar 01, 2018 12:06 am

Is this anything we need to be concerned about? My server is behind a firewall and doesn't allow the port addressed in the article.
16 Replies

14518 Views

Last post by davidkillingsworth View the latest post
Thu May 30, 2019 12:12 pm
certbot-zimbra v0.2

Last post by maxxer « Fri Feb 01, 2019 6:14 pm
Replies: 3
by maxxer » Sun Sep 10, 2017 8:30 am

Hi
An update for the users of this script: I've partially rewritten it so that now it patches nginx's template file instead of production ones....

3 Replies

9813 Views

Last post by maxxer View the latest post
Fri Feb 01, 2019 6:14 pm
How to monitor Zimbra using pflogsumm and NET-SNMP-EXTEND

Last post by jepy « Wed Jan 23, 2019 3:10 am
Replies: 6
Attachment(s) by jorgedlcruz » Mon Aug 14, 2017 12:20 pm

Hello everyone,
I've been working on a spare project using SNMP and Zimbra Collaboration. This project uses a modified version of the popular...

6 Replies

12589 Views

Last post by jepy View the latest post
Wed Jan 23, 2019 3:10 am
Did I get compromised by the recent exploit?

Last post by knappe01 « Tue Aug 20, 2019 2:51 pm

by knappe01 » Tue Aug 20, 2019 2:51 pm

Hi,

today I've realised that I'm not able to upload attachments bigger than 500 kb or so to zimbra web.

I always get an error message which...

0 Replies

39 Views

Last post by knappe01 View the latest post
Tue Aug 20, 2019 2:51 pm
Zimbra LDAP + AD Log on to... restriction

Last post by st3 « Tue Aug 20, 2019 12:49 pm

by st3 » Tue Aug 20, 2019 12:49 pm

Hi.
I intigrated ZImbra with LDAP and everyting works fine for users who have no "Log on to.." restrictions in AD.
Most of the users have a...

0 Replies

50 Views

Last post by st3 View the latest post
Tue Aug 20, 2019 12:49 pm
Block whole domain for SPAM

Last post by Blisk « Tue Aug 20, 2019 9:31 am

by Blisk » Tue Aug 20, 2019 9:31 am

How can I block whole domain for example .info or .co because I get most of spam from this domains?
Is there a possibillity to block also IP?
Is...

0 Replies

81 Views

Last post by Blisk View the latest post
Tue Aug 20, 2019 9:31 am
Letters do not come with gmail

Last post by phoenix « Tue Aug 20, 2019 9:22 am
Replies: 3
by ramm_89 » Mon Aug 19, 2019 11:56 am

Hello! Help me. I send gmail from mail to mail zimbra, the letter does not come. A day later, a message arrives at Gmail: 554 5.7.1 Service...

3 Replies

155 Views

Last post by phoenix View the latest post
Tue Aug 20, 2019 9:22 am
Email URLs and Layout issue after upgrade

Last post by andrey.ivanov « Tue Aug 20, 2019 9:13 am
Replies: 1
by bhwong » Tue Aug 20, 2019 9:11 am

We just upgrade Zimbra to the latest version yesterday and today, users are complaining that some of the emails they received went out of alignments....

1 Replies

67 Views

Last post by andrey.ivanov View the latest post
Tue Aug 20, 2019 9:13 am
SpamAssassin not learning

Last post by andrey.ivanov « Tue Aug 20, 2019 9:10 am
Replies: 12
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by guilhermehnog » Thu Aug 15, 2019 10:11 pm

Hi.
i'm new to zimbra and i would be really grateful if one of you could help me.

I'm running zimbra 8.8.15 on a CentOS 7 and is sending and...
12 Replies

3308 Views

Last post by andrey.ivanov View the latest post
Tue Aug 20, 2019 9:10 am
External relay change email "from" address to junk

Last post by phoenix « Tue Aug 20, 2019 5:03 am
Replies: 3
by yasanthau » Mon Aug 19, 2019 5:34 pm

Hi,

We configured the Zimbra server (V 8.8.11) to relay emails through external relay service "Mailgun". Followed similar commands shown...

3 Replies

217 Views

Last post by phoenix View the latest post
Tue Aug 20, 2019 5:03 am
ptr with 2 domain names

Last post by gdr777 « Mon Aug 19, 2019 8:07 pm
Replies: 3
by pattonb » Mon Aug 19, 2019 2:45 pm

How does 1 best handle a ptr record with 2 fqdn ?
in an attempt to avoid 'false positive' in ptr lookup ?

3 Replies

245 Views

Last post by gdr777 View the latest post
Mon Aug 19, 2019 8:07 pm
Disable Auth in port 25 (Not MUA)

Last post by juan_urtiaga « Mon Aug 19, 2019 6:17 pm
Replies: 7
by ImNotET » Wed Jul 26, 2017 10:25 am

Good day,

I want disable the user authentication in the port 25, we want use only 465 or 587 for MUA, i saw example like:

smtp inet n - - - -...

7 Replies

2721 Views

Last post by juan_urtiaga View the latest post
Mon Aug 19, 2019 6:17 pm
Massive CPU use - Command Java

Last post by yasanthau « Mon Aug 19, 2019 5:50 pm
Replies: 1
by snowymoountain » Mon Aug 19, 2019 10:32 am

Hi,

I notice intermittent CPU spikes and descided to run command top today as CPU is at 30% on a 16 CPU machine...

It does go up and down but what...

1 Replies

167 Views

Last post by yasanthau View the latest post
Mon Aug 19, 2019 5:50 pm
Internal server error

Last post by yasanthau « Mon Aug 19, 2019 5:44 pm
Replies: 1
by FELANA Nirina Hardy » Mon Aug 19, 2019 12:19 pm

Hello,

Can you help us.we can't connect on zimbra web admin.
the page show the following error.
"Internal Server Error

The server has...

1 Replies

119 Views

Last post by yasanthau View the latest post
Mon Aug 19, 2019 5:44 pm
Problems with subject encoding

Last post by mrgreiner « Mon Aug 19, 2019 3:25 pm

by mrgreiner » Mon Aug 19, 2019 3:25 pm

Hi,
I'm having trouble with the encoding of the subject with some emails. Using the Webclient, as an example, instead of something like:

Re:...

0 Replies

62 Views

Last post by mrgreiner View the latest post
Mon Aug 19, 2019 3:25 pm
Spam emails using my mail server

Last post by phoenix « Mon Aug 19, 2019 2:36 pm
Replies: 1
by marcosmezapy » Mon Aug 19, 2019 1:27 pm

Hi,

My mail server is allowing passing external domains using my mail server to my local users.

Example:

Mail server: mail.mydomain.com
From:...

1 Replies

96 Views

Last post by phoenix View the latest post
Mon Aug 19, 2019 2:36 pm
Cannot access zimbra web admin

Last post by cavp « Mon Aug 19, 2019 12:45 pm
Replies: 6
by enetcs » Tue Apr 23, 2019 4:13 pm

Hi
After a patch install on zimbra 8.6 to p14 I cannot login as administrator on zimbra server, I thought I can fix it changing the...

6 Replies

946 Views

Last post by cavp View the latest post
Mon Aug 19, 2019 12:45 pm
Sender address rejected: not owned by user

Last post by wineresp « Mon Aug 19, 2019 11:34 am
Replies: 8
Attachment(s) by mrdebian » Wed Mar 23, 2016 6:33 pm

Hi,

I've got serverA using smtp auth via serverB which is the Zimbra server.
User details are fine and I've setup my app to use same user auth and...

8 Replies

5403 Views

Last post by wineresp View the latest post
Mon Aug 19, 2019 11:34 am
New admin account created automatically

Last post by phoenix « Mon Aug 19, 2019 9:57 am
Replies: 3
by thameera » Mon Aug 19, 2019 5:54 am

Hi All,

Today I saw our mail server have unusual Admin accounts created. I checked audit log and found below. I want to know under what user this...

3 Replies

155 Views

Last post by phoenix View the latest post
Mon Aug 19, 2019 9:57 am
IMAP Clients see duplicate emails after webclient moves email item!

Last post by andrey.ivanov « Mon Aug 19, 2019 8:40 am
Replies: 1
by lukedouglass » Tue Aug 13, 2019 11:09 am

Hello Zimbra fans and devs.

After years of being a zimbra webmail master, I have a small task that is IMAP heavy. Note the server spec is not in...

1 Replies

247 Views

Last post by andrey.ivanov View the latest post
Mon Aug 19, 2019 8:40 am
Delivery through google

Last post by andrey.ivanov « Mon Aug 19, 2019 8:36 am
Replies: 4
by ntrone » Fri Feb 16, 2018 6:16 pm

So, today I tried to change the "zimbraSmtpHostname" to send to google(aspmx.l.google.com). And it exploded!

I noticed that while...

4 Replies

977 Views

Last post by andrey.ivanov View the latest post
Mon Aug 19, 2019 8:36 am

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