The Outgoing server (SMTP) %S does not allow plaintext passwords. Please try changing the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)' to 'Encrypted password'.
Aqeddac-inek uffiq (SMTP) %S ur isirig ara awalen uffiren s uḍris aččuran. Ɛreḍ asnifel n 'Tarrayt n usesteb' di 'Iɣewwaṛen n umiḍan | Aqeddac uffiɣ (SMTP)' ɣer 'Awal uffir awgelhan'.