https://bugs.kde.org/show_bug.cgi?id=440343
--- Comment #1 from Aaron Williams <[email protected]> --- Update, this was due to Akonadi not handling a very long CC list properly. The server thought it received a "CC" command and failed. I have the entire log entry, but I do not want to attach it here for obvious reasons. Here's the IMAP log entry: C: A000005 CAPABILITY S: * CAPABILITY IMAP4 IMAP4rev1 AUTH=PLAIN AUTH=XOAUTH2 SASL-IR UIDPLUS MOVE ID UNSELECT CLIENTACCESSRULES CLIENTNETWORKPRESENCELOCATION BACKENDAUTHENTICATE CHILDREN IDLE NAMESPACE LITERAL+ S: A000005 OK CAPABILITY completed. C: A000006 NAMESPACE S: * NAMESPACE ( ("" "/") ) ( ) ( ) S: A000006 OK NAMESPACE completed. C: A000007 ID ("name" "Kontact IMAP Resource") S: * ID ( name Microsoft.Exchange.Imap4.Imap4Server version 15.20 ) S: A000007 OK ID completed C: A000008 APPEND "INBOX" "27-Jul-2021 14:58:48 +0000" {110937} S: + Ready for additional command text. C: Received: from DM5PR1801MB1898.namprd18.prod.outlook.com (2603:10b6:4:6c::35) by BYAPR18MB2469.namprd18.prod.outlook.com with HTTPS; Tue, 27 Jul 2021 14:59:39 +0000 Received: from CO2PR04CA0074.namprd04.prod.outlook.com (2603:10b6:102:1::42) by DM5PR1801MB1898.namprd18.prod.outlook.com (2603:10b6:4:6c::35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4352.29; Tue, 27 Jul 2021 14:59:30 +0000 Received: from MW2NAM04FT047.eop-NAM04.prod.protection.outlook.com (2603:10b6:102:1:cafe::2c) by CO2PR04CA0074.outlook.office365.com (2603:10b6:102:1::42) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4308.20 via Frontend Transport; Tue, 27 Jul 2021 14:59:30 +0000 ... S: Cc: BAD Command Error. 10 X -- You are receiving this mail because: You are watching all bug changes.
