Entries by Stefan Helander

Ispconfig3: Let’s Encrypt not working

There can be several reasons for Let’s Encrypt certificates not being issued for sites. These are some things to check: When creating a new website, save it first, then open it again and check Let’s encrypt and then save it (i.e. don’t check the Let’s Encrypt unless the website has been saved at least once […]

Asterisk / FreePBX sip trunk registration problem, Serious Network Trouble

The asterisk log file (/var/log/asterisk/full) shows entries like this: [Sep  3 04:02:08] ERROR[3984] chan_sip.c: Serious Network Trouble; __sip_xmit returns error for pkt data Solution: The server had been moved from one public IP-address to another. In Asterisk PBX settings, the fields for both External IP and Bind Address (under Advanced) needed adjustment to the new […]

Toshiba laptop green blinking LED light

A Toshiba laptop I encountered recently was deemed “possibly dead”. It would not boot and screen was just black. A blinking green LED was present, meaning the battery is discharged. Further investigation revealed that the power supply electric cord had fallen out of the socket. Plugging it in again turned the blinking green LED to […]

Samsung SL-M3375FD scan to email and SMB stopped working

Samsung multi function laser printer SL-M3375FD could suddenly not send email (scan to email) and SMB shares stopped working. Logging in to the printer web interface, using the test function for the SMTP settings just resulted in “failed” when it tried to authenticate to the email server. Recently the email server’s SSL-certificate was updated because […]

Windows 10 VPN-problem after update to 1903 [workaround]

After installing the 1903 Windows 10 update, also called may 2019 update, users experience problems when trying to connect a VPN connection. The problem occurs when clicking Connect on the VPN-connection through the system tray. When the dialog box for user name and password should appear, nothing happens. Until Microsoft solves this a temporary workaround […]

How to run Zello on Mac OSX

Unfortunately there is no version of Zello available for Mac OSX but it is possible to run the Windows version using Wine. Download and install XQuartz version >= 2.7.7 Log out and log back in on your Mac Download and install “Wine stable“ Download “Zello for PC“ Launch Finder, go to Programs and run “Wine […]