108D-Link DIR-518L User Manual
Section 7 - Troubleshooting
To change the MTU rate on your router follow the steps below: 
•  Open your browser, enter the IP address of your router (192.168.0.1, http://dlinkrouter.local. or http://dlinkrouter.) 
and click OK. 
•  Enter your username (admin) and password (blank by default). Click OK to enter the web conguration page for the 
device. 
•  Click on Setup and then click Manual Congure.  
•  To change the MTU enter the number in the MTU eld and click Save Settings to save your settings. 
•  Test your email. If changing the MTU does not resolve the problem, continue changing the MTU in increments of ten.