@TimPitlinker Some ISPs block access to port 25 in order to try to avoid some issues with spammers. However, this can also block you from being able to connect to your mail server to send mail...

@TimPitlinker Consider this when configuring router logs mailing. Update your router firmware to the latest one (TL-WR940N(EU)_V6_3.20.1 Build 220801) and test again - here.

@Nordo The difference can be seen by the cable connector that has to be plugged in your device. DSL port has 4 ping RJ-11 connector, while the WAN port has 8-pin RJ-45 connector. Your VR600v supports...

@TomasRajz This depends on the router model hardware capabilities (CPU, Memory). Usually this is a decision of the TP-Link development team and probably only a TP-Link representative can answer your...

@mertyalibagi According to this post NAT loopback doesn't work on VR300.

@TomasRajz This error usually comes up when the number of entries exceeds the limit in its context. You can't increase the number of the entries because it's harcoded in the router firmware.