A friend of mine, Raihan-worked as part of my engineer team @ Excellent-learn Haraka since December as an alternative for simple SMTP engine for our tailor-made SMTP Relay. We would like to build a fast, simple, light, highly extensible SMTP server as a replacement for our current postfix or Zimbra. What is Haraka? Haraka is…
Zimbra 8.8.15 has been released last week. According to Zimbra product lifecycle, this release will be an LTS (Long Term Support) release and will have general support until 2022 and tehnical guidance until 2023. As Zimbra version 8.8.12 general support will be ended on September 2019, I would prefer to upgrade all of our Zimbra…
A few days ago, our clients had problems with their on-premise mail server deployment. Their Zimbra services are down and mailbox service could not restart. After a quick check, it turns out that one of the disk partitions is full because there is an incorrect mounting disk. As it uses incorrect folder/disk, backup process filling up…
Sometimes we have a bunch of over quota message filling up Zimbra queue, with detail as below : 197CF170F9 59761 Wed Oct 24 09:49:48 email-palsu@vivianchow.id (host alt1.gmail-smtp-in.l.google.com[74.125.195.27] said: 452-4.2.2 The email account that you tried to reach is over quota. Please direct 452-4.2.2 the recipient to 452 4.2.2 https://support.google.com/mail/?p=OverQuotaTemp m3-v6si2776998pld.435 – gsmtp (in reply to…
On each Zimbra deployment strategy, I’ve never activate Failed Login Lockout Policy as it tend to block legitimate user from being logged in due to brute force attack from others. The legitimate users often become a victim for spammer or robot attempt to login. I would also prefer Fail2ban to block login attempt from spammer…
On previous script, we can delete spam from queue by passing sender or recipient address on the script : [code lang=”bash”] pfdel email-spammer [/code] But what about situation where spammer filling up queue with random sender and recipient, and it tooks time to delete each message. Yes, we can use Postfix powerful binary, with postsuper…
I have a small script-got it from Internet-for Zimbra spam queue removal based on Postfix queue message removal. The script written on Perl language and become a mandatory script on each Zimbra server deployment, as a quick tools to remove spam message from queue caused by compromised account. As of Zimbra 8.7, there is a little…
Zimbra Collaboration Suite is an open source email and collaboration platform that includes email, contacts, calendar, documents and more. It is a Web-based application suite that can be deployed as an on-premise private cloud or outsourced public cloud service. I’ve been using Zimbra since 2007 (version 4.x) for variety scale of implementation : from hundreds to fifty thousand…
Yesterday, I got a phone call from my customer regarding their Zimbra Mail Server. I’ve helped them setting up and configuring Zimbra, 2-3 years ago. Their Zimbra mail server not working properly since yesterday morning. Dig on log details show me error message : “Zimbra No space left on device”, but it should be wrong,…
After Moving my server Infrastructure from Self Co-Location Server to VPS Provider, I tested several providers. The first one is DigitalOcean and pick their “middle specs” droplet with 4 GB Memory, 2 Core Processor, 60 GB SSD Disk and 4 TB Transfer and installing Zimbra Mail Server on top of Ubuntu 14.04 64 bit or CentOS 6…