Technical incident - Blocks caused by 501 Syntax error - Badly formatted address errors

Aug 25, 04:44 PDT Update - The incident is still under investigation.Thank you for your patience and cooperation and we are sorry for any inconvenience that this might cause. ^ACAug 25, 03:15 PDT Investigating - We are currently investigating an issue according to which some users might have their emails blocked with the following error: "501 Syntax error - Badly formatted address". Updates to follow. ^AC

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