Hi @mrmarkuz and @oneitonitram
I get this message after install Joplin from softwarecenter:
{“code”:“EENVELOPE”,“message”:“Mail command failed: 501 5.1.7 Bad sender address syntax”,“stack”:“Error: Mail command failed: 501 5.1.7 Bad sender address syntax\n at SMTPConnection._formatError (/home/joplin/packages/server/node_modules/nodemailer/lib/smtp-connection/index.js:798:19)\n at SMTPConnection._actionMAIL (/home/joplin/packages/server/node_modules/nodemailer/lib/smtp-connection/index.js:1607:34)\n at SMTPConnection. (/home/joplin/packages/server/node_modules/nodemailer/lib/smtp-connection/index.js:1076:18)\n at SMTPConnection._processResponse (/home/joplin/packages/server/node_modules/nodemailer/lib/smtp-connection/index.js:982:20)\n at SMTPConnection._onData (/home/joplin/packages/server/node_modules/nodemailer/lib/smtp-connection/index.js:763:14)\n at Socket.SMTPConnection._onSocketData (/home/joplin/packages/server/node_modules/nodemailer/lib/smtp-connection/index.js:195:44)\n at Socket.emit (node:events:517:28)\n at addChunk (node:internal/streams/readable:368:12)\n at readableAddChunk (node:internal/streams/readable:341:9)\n at Socket.Readable.push (node:internal/streams/readable:278:10)”}