Thanks, now I'm getting this error message:
++ Starting Swift_SmtpTransport
<< 220 SN4PR0601CA0007.outlook.office365.com Microsoft ESMTP MAIL Service ready at Mon, 20 Jul 2020 20:42:11 +0000
> EHLO forums.ochslabs.com
<< 250-SN4PR0601CA0007.outlook.office365.com Hello [192.185.4.115]
250-SIZE 157286400
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-STARTTLS
250-8BITMIME
250-BINARYMIME
250-CHUNKING
250 SMTPUTF8
<< 220 2.0.0 SMTP server ready
> EHLO forums.ochslabs.com
<< 250-SN4PR0601CA0007.outlook.office365.com Hello [192.185.4.115]
250-SIZE 157286400
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-AUTH LOGIN XOAUTH2
250-8BITMIME
250-BINARYMIME
250-CHUNKING
250 SMTPUTF8
<< 334 VXNlcm5hbWU6
> ZG8tbm90LXJlcGx5QG9jaHNsYWJzLmNvbQ==
<< 334 UGFzc3dvcmQ6
<< 235 2.7.0 Authentication successful
++ Swift_SmtpTransport started
<< 250 2.1.0 Sender OK
<< 250 2.1.5 Recipient OK
<< 354 Start mail input; end with <CRLF>.<CRLF>
.
<< 554 5.2.0 STOREDRV.Submission.Exception:SubmissionQuotaExceededException; Failed to process message due to a permanent exception with message The message can't be submitted because the sender's submission quota was exceeded. SubmissionQuotaExceededException: The message can't be submitted because the sender's submission quota was exceeded. [Hostname=SA0PR19MB4206.namprd19.prod.outlook.com]
!! Expected response code 250 but got code "554", with message "554 5.2.0 STOREDRV.Submission.Exception:SubmissionQuotaExceededException; Failed to process message due to a permanent exception with message The message can't be submitted because the sender's submission quota was exceeded. SubmissionQuotaExceededException: The message can't be submitted because the sender's submission quota was exceeded. [Hostname=SA0PR19MB4206.namprd19.prod.outlook.com]
" (code: 554)