Search found 52 matches

by dbayer
Wed Sep 21, 2016 4:18 pm
Forum: Zimbra Mobile Plus
Topic: An introduction to Zimbra Mobile Plus
Replies: 6
Views: 20274

Re: An introduction to Zimbra Mobile Plus

Hi Cine,

Thanks for the info. It has a few nice features I would enjoy, but not enough to pay extra compared to my existing NE license.

Thanks,
Daniel
by dbayer
Wed Sep 14, 2016 3:10 pm
Forum: Zimbra Mobile Plus
Topic: An introduction to Zimbra Mobile Plus
Replies: 6
Views: 20274

Re: An introduction to Zimbra Mobile Plus

How is this different then the Mobile Activesync support built into the network edition?
by dbayer
Mon Apr 25, 2016 2:49 pm
Forum: Administrators
Topic: Preventing spoofed email
Replies: 17
Views: 10341

Re: Preventing spoofed email

quanah wrote:
Hi Daniel,

You can track the response here as well:

https://lists.amavis.org/pipermail/amavis-users/2016-April/thread.html

I finally got the question sent out today.

Regards,
Quanah


Thank you! I'll check it out.
by dbayer
Wed Apr 13, 2016 3:13 pm
Forum: Administrators
Topic: Block multiple SMTP Auth Attempts
Replies: 3
Views: 2546

Re: Block multiple SMTP Auth Attempts

Thanks Vavai and Jorge.

I will look into blocking these with our firewall. That script looks very useful as well!

Daniel
by dbayer
Mon Apr 11, 2016 7:36 pm
Forum: Administrators
Topic: Block multiple SMTP Auth Attempts
Replies: 3
Views: 2546

Block multiple SMTP Auth Attempts

Hello, Is there a setting in Zimbra to lockout an IP Address after so many SMTP AUTH attempts? I'm having problems with spammers trying to break in. See the sample log below. Thanks, Daniel Apr 11 06:51:50 postfix/smtpd[30584]: connect from unknown[58.218.185.110] Apr 11 06:51:51 postfix/smtpd[30584...
by dbayer
Mon Apr 11, 2016 12:16 am
Forum: Installation and Upgrade
Topic: Banned Content Alert
Replies: 4
Views: 2557

Re: Banned Content Alert

Is there a way to only unblock encrypted PDF's?

If not, has this already been requested as a new feature?

I like the security of blocking all other encrypted archives, but we get many password protected PDF's, and I have to manually unblock this each time someone sends us one.

Thanks,
Daniel
by dbayer
Mon Apr 04, 2016 10:58 pm
Forum: Administrators
Topic: [SOLVED] RBL Blocking Everything
Replies: 7
Views: 8675

Re: RBL Blocking Everything

I've solved my problem! It turns out the DNS forwarder I've been using was blocking these checks. We were using Commodo Secure DNS. https://www.comodo.com/secure-dns/switch/ We've been having some separate issues with this provider and I am now switching all of our DNS settings to another provider. ...
by dbayer
Mon Apr 04, 2016 9:49 pm
Forum: Administrators
Topic: [SOLVED] RBL Blocking Everything
Replies: 7
Views: 8675

Re: RBL Blocking Everything

Hello, I'm still having this issue. I've contacted SORBS and my ISP. My IP address is no longer listed on SORBS. But I still have the message service unavailable in my logs. I'm not sure what I can try next. Does anyone have any suggestions? Thanks Apr 4 17:43:24 localHost postfix/smtpd[20591]: warn...
by dbayer
Wed Mar 30, 2016 8:03 pm
Forum: Administrators
Topic: Preventing spoofed email
Replies: 17
Views: 10341

Re: Preventing spoofed email

Thank you for the response. In the future I'll create a separate post.

I hope you can post the amavis author's response here some time.

Thanks,
Daniel
by dbayer
Mon Mar 28, 2016 2:59 am
Forum: Administrators
Topic: Preventing spoofed email
Replies: 17
Views: 10341

Re: Preventing spoofed email

Quick Question on this. I have Zimbra setup to block certain attachment types. Lately spammers have been trying to send blocked attachments by setting the From and To address the same. For example To: Daniel@mail.com From: Daniel@mail.com Zimbra is sending a notification to Daniel@mail.com for every...

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