There will be training in configuring ARC-enabled software, and adding ARC support to email infrastructure using open source software, at the 40th general meeting of M3AAWG. This meeting will be held at the Corinthia Hotel in Lisbon, Portugal the week of June 12th. Several members of the ARC community will conduct the tutorial program on Monday, while ARC and related email authentication measures will be the topic of formal and informal discussion during this meeting. For more information about M3AAWG and their members, please refer to the M3AAWG web site.