Hi Team,
I have several Office365 accounts for work. For one of these accounts I cannot send emails through emClient due to the following error:
[SMTP] MailClient.Accounts.LoginException: L'autenticazione è fallita per il seguente motivo:
"The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters.
at MailClient.Protocols.Smtp.SmtpSendCommand.Authenticate(WorkerStatus status)
at MailClient.Protocols.Smtp.SmtpSendCommand.Connect(WorkerStatus status)
at MailClient.Protocols.Smtp.SmtpSendCommand.Execute(WorkerStatus status)
at MailClient.Commands.Command.Process(WorkerStatus status)
--- End of stack trace from previous location ---
I have tried to configure another account by adding it as “Outlook.com” account and it works properly. I have already checked Microsoft Graph authorization on Microsoft Azure and this account is authorized for sending e-mails through emClient.
Could you investigate this issue?
Thanks and kind regards,
Andrea