Updating won't fix this problem if it's the MTUs that aren't matching. If you know how, you can check that on each 220 with ifconfig. If not, then you should ask your reseller to open a Support ticket with Sophos/Astaro.
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005
Updating won't fix this problem if it's the MTUs that aren't matching. If you know how, you can check that on each 220 with ifconfig. If not, then you should ask your reseller to open a Support ticket with Sophos/Astaro.
Sophos UTM Community Moderator Sophos Certified Architect - UTM Sophos Certified Engineer - XG Gold Solution Partner since 2005