Search found 35 matches

by stefaniu.criste
Mon Apr 01, 2019 9:06 am
Forum: Administrators
Topic: GuardianKey integration for painless high-security
Replies: 4
Views: 2953

Re: GuardianKey integration for painless high-security

Why should a provider send some (sensitive) data to be analyzed by a 3rd party provider, when Zimbra has builtin 2-factor authentication ?
by stefaniu.criste
Thu Feb 07, 2019 12:05 pm
Forum: Administrators
Topic: Migration Tool for Zimbra 8.8.11
Replies: 8
Views: 775

Re: Migration Tool for Zimbra 8.8.11

Maybe imapsync is not the best tool, but worths a try
https://imapsync.lamiral.info/
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: 605

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: 974

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: 242

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: 233

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: 6649

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: 6649

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: 480

Re: Authenticated Receive Chain (ARC)

Thanks, @phoenix, good to know!

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