I can't send or receive MMS (group or picture messages) on Android when connected to a WiFi network with Adguard protection enabled using the HTTP proxy. It seems like this has been an issue for years, but I can't find a solution. This thread from 2015 discusses it at length, but no solution is provided: https://forum.adguard.com/index.php?threads/mms-messages-blocked.2470 When I have Adguard enabled in HTTP proxy mode, outbound MMS messages sit in "Sending" state until they eventually time out. Inbound MMS messages generate an alert that the message was not downloaded. If I either disable Adguard protection or disconnect from WiFi, the messages will complete. SMS is not affected. I have a rooted Nexus 5X on AT&T, running Android 6.0.1, cyanogenmod version 13.0-20161222 I'm using the stock messenger app from google, com.google.android.apps.messaging, version 2.0.770 Adguard version 2.8.76 I have added my APN MMSC domain "mmsc.mobile.att.net" to the whitelist, as well as the MMS proxy, "proxy.mobile.att.net". I've tried changing my MMS port to 8080 but it doesn't seem to make any difference. This problem doesn't seem to occur when I use the VPN proxy mode, but I would like to connect to my own VPN for secure communication and this isn't possible when using the Adguard VPN proxy. Tried searching the forum for other threads, but the system won't allow me to search on "MMS"