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Mike-IceWarp-Support

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  • Known issues in Deep Castle Gen 2

    Version 13.0.3.7 (Update 3 Build 7) Outlook Sync cannot send an email via port 465 (SSL) (you can solve it by using the 587 SSL port instead) Version 13.0.3.6 (Update 3 Build 6) Cannot manage th...

  • ESET settings for Microsoft Outlook

    This article suggests configuration steps to address the synchronisation issues in Microsoft Outlook caused by the ESET Antispam/Antivirus. Please note that adjusting ESET Antispam/Antivirus setti...

  • How to configure SMS Server using Clickatell

    This guide is here to assist you in configuring your SMS Server by using the Clickatell provider. 1. LOG IN TO CLICKATELL Please log in to Clickatell Developers' Central using your current login in...

  • Let's Encrypt certificate has expired

    Summary Certificate trust mainly relies on the "root" issuing certificate (and intermediate certificates) being trusted by your computer. The root certificate issues an Intermediate certificate whi...

  • How to sign emails with S/MIME certificate

    WebClient supports personal SSL certificates. It allows you to send and receive digitally signed messages. At first, you need to supply your certificate to your account. WebClient will then use you...

  • Bring your team online - technical how-to

    You are only a few steps away from upgrading your existing installation of IceWarp Server into a complete virtual office. Add the collaboration features into your License. Simply reactivate the se...

  • IceWarp on Windows Server 2012 end of support

    Please note that from 10.10.2023, IceWarp is ending technical support for its solution running on Windows Server 2012 that reached its life cycle defined by Microsoft. See the announcement from Mic...

  • Relay server, DNS lookup and SMTP Routing

    Nowadays, unfortunately, it is not rare for a remote system to reject emails from you. If you check the SMTP logs, you will note that you are disconnected right after you connect to a remote system...

  • How to install the new Outlook Sync addon (from 13.0.2.20214)

    We have recently released a brand new version of Outlook Sync addon that has been completely redesigned and requires, therefore, certain steps to follow to make it work properly. Steps to follow: 1...

  • Checking allowed ports

    If you’re experiencing troubles with server communication, and you have installed IceWarp on RedHat/CentOS server, it is good practice to check the following: iptables – check what rules are appli...