Search found 149 matches

by bhwong
Wed Jan 28, 2015 7:30 pm
Forum: Administrators
Topic: How to prevent external parties from using our distribution list?
Replies: 4
Views: 588

How to prevent external parties from using our distribution list?

We notice that recently, some hackers start to send email to everyone@mydomain.com. Is it possible to reserve our distribution list only for internal users and block external users?

by bhwong
Wed Nov 26, 2014 3:32 am
Forum: Administrators
Topic: Is gmail blocking zimbra?
Replies: 17
Views: 3132

Is gmail blocking zimbra?

Thanks Ahmad. We are still on ZCS 7.2.6. Will check this out once we upgrade our Ubuntu OS first! :)
by bhwong
Tue Nov 25, 2014 8:35 pm
Forum: Administrators
Topic: overcoming spam issue?
Replies: 3
Views: 610

overcoming spam issue?

Recently I have been receiving huge amount of spams that comes in every 1-2 minutes non-stop, such that I have to block the spamming domain using the "Spam Mail Options" under my Preferences. However, some spams are faking my own email address as the sender! I can't possibly block...
by bhwong
Tue Nov 25, 2014 7:17 pm
Forum: Administrators
Topic: Is gmail blocking zimbra?
Replies: 17
Views: 3132

Is gmail blocking zimbra?

I got more details why gmail is blocking us. It appears that gmail has quota for every domains. Once this quota is reached, gmail will block further email from coming in until the next day. How can we restrict our users from sending too many email to gmail? I notice that some of our users are forwar...
by bhwong
Sun Nov 16, 2014 7:22 pm
Forum: Administrators
Topic: Zimbra backup failure but successful 44 min later?
Replies: 0
Views: 203

Zimbra backup failure but successful 44 min later?

Anyone ever encounter Zimbra email alert showing backup failure, but 44 min later, sent another email to say it's successful? Under the admin console, the full backup for this date is shown. So I assume the backup is succcessful afterall. Why does it sent an email to say it failed when full back...
by bhwong
Sun Nov 16, 2014 7:17 pm
Forum: Administrators
Topic: Is gmail blocking zimbra?
Replies: 17
Views: 3132

Is gmail blocking zimbra?

Thanks Sebastian and Ahmad for your advise. One of our accounts is spamming gmail and we got the user to change his password.
by bhwong
Thu Nov 13, 2014 7:56 pm
Forum: Administrators
Topic: Is gmail blocking zimbra?
Replies: 17
Views: 3132

Is gmail blocking zimbra?

We realize that all our hosted domains email send to google gmail will not get delivered. Yet we are not blacklisted by google and there is no email bounces as well. Anyone else encounter this issue? How can we contact google to investigate their email servers?

by bhwong
Mon Sep 29, 2014 11:21 pm
Forum: Administrators
Topic: Is Zimbra affected by Bash Shellshock?
Replies: 4
Views: 687

Is Zimbra affected by Bash Shellshock?

Thanks! So the vulnerable can only happen thru web request and not SSH or any other services? Unfortunately our Ubuntu 8 no longer has any update, less for Bash. There is a solution provided but not sure if this will break Zimbra: http://leftyfb.com/2014/09/25/heres-how-to-patch-ubuntu-8-04-or-anyth...
by bhwong
Mon Sep 29, 2014 5:14 am
Forum: Administrators
Topic: Is Zimbra affected by Bash Shellshock?
Replies: 4
Views: 687

Is Zimbra affected by Bash Shellshock?

Zimbra itself may not be vulnerable but the Linux OS it is running on will likely to have vulnerable bash version already installed. Will this mean that the server itself is vulnerable? How can we verify if Zimbra server is safe? As long as there is no web services running? What about SSH?


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