Search found 33 matches

by stefaniu.criste
Fri Aug 03, 2018 6:31 am
Forum: Administrators
Topic: Nginx fail to match virtual server name for imap and pop3
Replies: 5
Views: 286

Re: Nginx fail to match virtual server name for imap and pop3

..... So is not possible in any way to have this feature on single server with single ip, maybe with one ip for each domain? .... You can use a compromise solution, at the other end of the issue chain. Suppose you have the main server hostname as zimbra.domain.tld and a few other domains running on...
by stefaniu.criste
Mon Jul 30, 2018 8:52 am
Forum: Administrators
Topic: Dictionary attack via IMAP ??
Replies: 4
Views: 426

Re: Dictionary attack via IMAP ??

Besides this, wherever possible, use the 2 factor authentication feature.
by stefaniu.criste
Sun Jul 01, 2018 7:10 pm
Forum: Administrators
Topic: hardenize.com
Replies: 0
Views: 123

hardenize.com

Site still in beta, but has some nice tests on both web and email security settings.
by stefaniu.criste
Tue May 22, 2018 10:01 am
Forum: Administrators
Topic: Blocking spoofed address
Replies: 1
Views: 125

Re: Blocking spoofed address

Two quick ideas (you need however to find their outgoing IPs)

- you could block their sending IPs at the firewall level (rough and brute)
- you can set a local RBL and add their IPs, as well as other nasty spammers (harder to implement, but very elegant)
by stefaniu.criste
Mon May 14, 2018 11:16 am
Forum: Community News
Topic: PGP and S/MIME vulnerability
Replies: 1
Views: 1947

Re: PGP and S/MIME vulnerability

Further details
https://efail.de/
by stefaniu.criste
Mon May 14, 2018 10:57 am
Forum: Community News
Topic: PGP and S/MIME vulnerability
Replies: 1
Views: 1947

PGP and S/MIME vulnerability

It's still early news, but still may be affecting Zimbra, too EFF press release: https://www.eff.org/deeplinks/2018/05/attention-pgp-users-new-vulnerabilities-require-you-take-action-now Initial Twitter announcement https://twitter.com/seecurity/status/995906576170053633 Stay alert and watch the tom...
by stefaniu.criste
Mon Apr 23, 2018 6:04 am
Forum: Administrators
Topic: Authenticated Receive Chain (ARC)
Replies: 2
Views: 311

Re: Authenticated Receive Chain (ARC)

Thanks, @phoenix, good to know!
by stefaniu.criste
Mon Apr 23, 2018 5:35 am
Forum: Administrators
Topic: Authenticated Receive Chain (ARC)
Replies: 2
Views: 311

Authenticated Receive Chain (ARC)

Hello all

is there any initiative in the development team to implement ARC in Zimbra?
http://arc-spec.org/

Thanks
by stefaniu.criste
Wed Feb 21, 2018 12:12 pm
Forum: Administrators
Topic: 8.7.11 -> 8.8.6 Issues with delegated admin rights
Replies: 12
Views: 2261

Re: 8.7.11 -> 8.8.6 Issues with delegated admin rights

PLease check and verify the behaviour in the following bug
https://bugzilla.zimbra.com/show_bug.cgi?id=108858

Go to advanced search