During MAM sync a lot of stanzas are being sent both ways. This causes Tigase XMPP Server to disconnect users due to exceeded limits of stanzas sent by the user. Normally, that is OK, but in this case, the user is sending mostly <a/> ACK packets from Stream Management XEP-0198 as answers to the requests sent by the server.

We should not could those <a/> and <r/> stanzas marked with urn:xmpp:sm:3 namespace to the limits of sent/received stanzas.