Search found 36 matches

by stefaniu.criste
Sun Jun 25, 2017 10:39 am
Forum: Zimbra Collaboration 8.8 Beta
Topic: [SOLVED] 8.8 Beta licensing for network-ng
Replies: 4
Views: 2943

Re: 8.8 Beta licensing for network-ng

Hello back

I have done it now, but I get the same behavior.
by stefaniu.criste
Sun Jun 25, 2017 7:05 am
Forum: Zimbra Collaboration 8.8 Beta
Topic: [SOLVED] 8.8 Beta licensing for network-ng
Replies: 4
Views: 2943

[SOLVED] 8.8 Beta licensing for network-ng

Hello all In the initial Beta test announcement email, I have received the following testing rules - All bugs will be reported through bugzilla with the 8.8 keyword 8_8_0_Beta_ - No Zimbra Support will be provided for the Zimbra Collaboration 8.8 Beta testing. - Network Edition testers must use thei...
by stefaniu.criste
Sat Jun 24, 2017 3:21 pm
Forum: General Zimbra Feedback
Topic: Support portal does not enforce https://
Replies: 1
Views: 2849

Support portal does not enforce https://

Hello all

please take into consideration forcing https:// on the support portal at support.zimbra.com.
At this moment the redirection is not in place, and it is still possible to send credentials in plain text.

Thank you
by stefaniu.criste
Sat Jun 24, 2017 4:43 am
Forum: Administrators
Topic: Account blocking. Find the cause?
Replies: 3
Views: 1228

Re: Account blocking. Find the cause?

DualBoot wrote:Fail2ban could be a solution on the front server.

Either fail2ban or csf are good, yet I have observed a high number of distributed attacks, with very few authentication attempts (two or three) per each IP. In this case is no much thing that fai2ban/csf can do.
by stefaniu.criste
Thu Jun 22, 2017 6:03 pm
Forum: Administrators
Topic: Account blocking. Find the cause?
Replies: 3
Views: 1228

Re: Account blocking. Find the cause?

We have the same issue for some "well-known" accounts. In our case, the blocking is caused by bots trying to brute-force the access onto the server, leading to account locking. Solution is to have a smaller duration of lockout (10 minutes) and log monitoring, then blocking the offending IP...
by stefaniu.criste
Thu Jan 08, 2015 2:19 pm
Forum: Administrators
Topic: Recipient address rejected: Access denied
Replies: 5
Views: 1137

Recipient address rejected: Access denied

Late update



Same behavior on our server. One particular domain gets emails rejected, with no much detail why.

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