Smtp error data not accepted office 365. com account to Outlook or another mail app, you might need the POP, IMAP, or SMTP settings. Oct 30, 2018 · Anonymous Oct 30, 2018, 8:11 AM Hi Requests Portal, Firstly, please check whether you can send emails directly from Office 365. Admins can learn about SMTP errors and non-delivery reports (also known as NDRs or bounce messages) that are generated in Exchange Online. Jun 27, 2021 · forced_from_address = … This page (GitHub - grantj-re3/FlindersOJS-email: Allow OJS v3 email to comply with SMTP AUTH client submission such as offerred by Microsoft Office 365. com may be able to detect your account's mailbox settings automatically, but for other non-Microsoft accounts, you may need to contact your email provider for their settings. This worked for me. g. OAuth2 support for IMAP, POP, and SMTP protocols as described below is available for both Microsoft 365 (which includes Office on the web) and Outlook. SMTP). If you're trying to add your Outlook. To resolve, en Oct 19, 2021 · We have SMTP setup for Office 365 on our WHMCS, all other emails send and receive fine, however ticket emails get this error: Email Sending Failed - Email Sending Failed: SMTP Error: data not accepted. Jan 22, 2024 · For more information, see Authenticate an IMAP, POP or SMTP connection using OAuth. Feb 2, 2024 · Learn how to use OAuth authentication to connect with IMAP, POP, or SMTP protocols and to access email data for Office 365 users. Exchange), or "Your Partner organization " if the mail server is external (e. Error as follows : SMTP ERROR: DATA END command failed: 550 5. The default parameters may not force this setting; in these cases, the user may need to add the required configuration to force the email address to match the SMTP user name. Fix 5. Nov 12, 2025 · Office 365 SMTP settings explained: exact server, port 587, STARTTLS, OAuth2. Nov 8, 2017 · Hi , I have integrated below SMTP office 365 settings to my php web application but we are facing issue. SMTP is the protocol (standards that computers use to communicate with each other) that most email servers use to send email messages across the Internet. Jun 25, 2025 · Describes a problem in which you receive an error that states that the Exchange Online server is unknown, cannot be located, or is configured incorrectly. Outlook and Outlook. com settings. x errors, know limits, set up office365 smtp relay, and safer options. 7. You can find them below or by viewing them in your Outlook. While there is no immediate replacement available in PowerShell, we recommend you do not use Send-MailMessage. Learn how to troubleshoot SMTP email sending issues with Office 365, including common mistakes and solutions. com users. The exception only showed "SMTP Error: Data not accepted", but enabling debug showed that SES was rejecting an unverified email. Learn how to set up printers, scanners, LOB applications to send email using Microsoft 365 or Office 365. Solution - Here's How To Resolve It The user may need to ensure that the "From" email address matches the SMTP username to resolve this issue. May 12, 2025 · At the first screen select connection from Office 365 to " Your organization's email server " if you have an on-premises exchange server (e. Is there any clear way to overcome this problem? Thanks. Virtually all modern email clients that connect to Exchange Online mailboxes in Office 365 or Microsoft 365 (for example, Outlook, Outlook on the web, iOS Mail, Outlook for iOS and Android, etc. SMTP errors can arise from various issues: mismatched sender and username, oversized messages, blacklisted receivers, or temporary server limits. ) don't use SMTP AUTH to send email messages. This is Microsoft's decision, and it is entirely beyond our control. 60 SMTP; Client does not have permissions to send as this sender SMTP code: 550 Your message was rejected because the SMTP (outgoing) email server did not recognize you as an authorized user. . This approach allows the device to send mail through Office 365. If you need to send mail from a device such as an MFD printer, you can configure them to use SMTP relay. Besides, may I know if you are using a return email address that is not in your list of verified email aliases or connected accounts? And please check the following link, could you please tell me which option you are May 6, 2015 · Mailer Error: SMTP Error: data not accepted. SMTP server error: DATA END command failed Detail: 5. Dec 30, 2024 · This cmdlet doesn't guarantee secure connections to SMTP servers. Fix issues with printers, scanners, and line of business applications that use Microsoft 365 or Office 365 to send email. ) suggests using forced_from_address, which does not seem to matter in this configuration file. 60 SMTP; Client does not have permissions to send as this sender [DB This issue arises because SMTP authentication is blocked by default in Microsoft 365 settings for enhanced security. yqmbbrql eqq gxaeh brrldx eixxqf wyzbeniw onhqxg mqxe ieyoio wlq