Search found 149 matches
- Fri Jun 09, 2023 9:04 pm
- Forum: /etc
- Topic: Barracuda Urges Replacing - Not Patching - Its Email Security Gateways
- Replies: 2
- Views: 24592
Barracuda Urges Replacing - Not Patching - Its Email Security Gateways
Hi Everyone, For any who are using Barracuda's appliances, this article will be of interest: https://krebsonsecurity.com/2023/06/barracuda-urges-replacing-not-patching-its-email-security-gateways/ It’s not often that a zero-day vulnerability causes a network security vendor to urge customers to phys...
- Wed Mar 15, 2023 10:23 pm
- Forum: Administrators
- Topic: Intermittent DKIM Fails With SendGrid-Generated Emails
- Replies: 5
- Views: 1063
Re: Intermittent DKIM Fails With SendGrid-Generated Emails
We agree that some alteration is happening after SendGrid sends the email. Not necessarily. There are likely multiple SMTP gateways/relays involved on SendGrid's end before email is handed off to your Zimbra server for delivery, and any one of those hosts may be modifying the email causing the DKIM...
- Tue Mar 14, 2023 5:09 pm
- Forum: Administrators
- Topic: Intermittent DKIM Fails With SendGrid-Generated Emails
- Replies: 5
- Views: 1063
Re: Intermittent DKIM Fails With SendGrid-Generated Emails
Mark, I am not a Sendgrid user, so I am not familiar with how they normally use DKIM for signing their outbound email, but I can offer some hints that may lead to the root cause of the issue. When validation of a DKIM signature for an email fails, it is most commonly because something in the email w...
- Tue Mar 14, 2023 4:36 pm
- Forum: Administrators
- Topic: administrator login locked out
- Replies: 1
- Views: 537
Re: administrator login locked out
Check if your Zimbra admin account is locked out. As the zimbra user, run: zmprov ga you@example.com zimbraAccountStatus This will produce output similar to: # name you@example.com zimbraAccountStatus: lockout If the zimbraAccountStatus is not "active" then run: zmprov ma you@example.com z...
- Tue Mar 14, 2023 4:21 pm
- Forum: Administrators
- Topic: I don't understand what this means
- Replies: 3
- Views: 918
Re: I don't understand what this means
In the mailbox.log excerpt that you included, the key lines that stand out are: 2023-03-13 02:35:50,189 ERROR [LmtpServer] [] TcpServer/7025 - cannot handle connection; thread pool exhausted java.util.concurrent.RejectedExecutionException: Task com.zimbra.cs.lmtpserver.TcpLmtpHandler@205dbecf reject...
- Wed Jan 18, 2023 12:42 am
- Forum: Administrators
- Topic: DMARC alignment in Zimbra 8.8.15
- Replies: 15
- Views: 10405
Re: DMARC alignment in Zimbra 8.8.15
Since we can easily override the default scores, this means you can create a very high score for the p=reject test to ensure you will never deliver an email that fails this test. Hi Mark, It can be a philosophical debate about where it is best to do spam/malware filtering. It has been much the same...
- Tue Jan 17, 2023 11:52 pm
- Forum: Administrators
- Topic: DMARC alignment in Zimbra 8.8.15
- Replies: 15
- Views: 10405
Re: DMARC alignment in Zimbra 8.8.15
It is unfortunately sad to hear that we will have to wait Zimbra 10 to see this integrated into Zimbra, if at all... I think you will be pleasantly surprised. Zimbra 10 is a renewed focus on all things security and the current leadership at Zimbra recognizes how important this is for the product's ...
- Thu Jan 12, 2023 8:36 pm
- Forum: Administrators
- Topic: DMARC alignment in Zimbra 8.8.15
- Replies: 15
- Views: 10405
Re: DMARC alignment in Zimbra 8.8.15
Hello Mabi, I am glad to hear you found the Zimbra email security webinar on DMARC has been helpful. I happened to see your messages today while browsing the Forum and thought I should chime in here to see if I can help provide some clarification. As you know from watching the webinar, for an email ...
- Tue Nov 22, 2022 4:45 pm
- Forum: Installation and Upgrade
- Topic: 8.8.15 Patch 35: Spell & Convertd services fail to start
- Replies: 3
- Views: 1955
Re: 8.8.15 Patch 35: Spell & Convertd services fail to start
As an update to my last post, this issue has been acknowledged as a bug by Zimbra Support and assigned the ID: ZBUG-3126.
- Tue Nov 22, 2022 8:42 am
- Forum: Installation and Upgrade
- Topic: 8.8.15 Patch 35: Spell & Convertd services fail to start
- Replies: 3
- Views: 1955
8.8.15 Patch 35: Spell & Convertd services fail to start
In the event you are installing 8.8.15 Patch 35 on a multi-server Zimbra cluster, where you have the Zimbra mailboxd service installed on one server and the mta service installed on another server, you may discover that after installing Patch 35 on the server with mailboxd and restarting with "...