Microsoft has confirmed that some Outlook.com users are experiencing an issue where when they try to send email to their Gmail account, the email is blocked and marked as spam.
According to a support document published by Redmond on Tuesday, this known issue only affects users with Outlook.com country domains.
Affected Outlook users are notified in a follow-up email from Gmail servers that the message is suspicious and has been stopped from reaching the recipient’s inbox.
“The message returned from the remote server was detected as spam” [..]. Gmail has detected that this message may be suspicious because the sending domain has a very low reputation. “To best protect our users from spam, your message has been blocked,” a reply from his Gmail server (mx.google.com) explains.
According to Google’s support website, these messages are “likely to be spam,” so it’s very likely that only some of them will be blocked.
Temporary fix available
Until the Outlook.com team can address this newly identified issue, Microsoft is encouraging affected users to add an Outlook.com alias to their account and use that alias to send email to their Gmail contacts. I advise you to do so.
An Outlook alias is an additional email address associated with your Outlook.com account that uses the same inbox, contact list, and account settings as your primary email address.
All users use the same credentials, so they can sign in to their Outlook.com accounts using any alias.
To add a new alias,[エイリアスを追加]Click and log in to your Microsoft account if necessary.[エイリアスの追加]section, create a new Outlook.com email address and designate it as an alias, or add an existing email address as an alias.[エイリアスの追加]Click.
After you create a new Outlook.com alias, follow these steps to send email from a different email address or change your primary alias.
Google’s new anti-spam guidelines
Microsoft hasn’t disclosed the root cause of Outlook.com emails being tagged and blocked as spam, but Google has announced a new batch in Redmond to improve the deliverability of Outlook emails to Gmail accounts. It suggests that sender guidelines should be reviewed.
Google is now blocking emails sent by mass senders who don’t follow stricter spam thresholds and authenticate their messages as required by new guidelines designed to strengthen defenses against spam and phishing attacks. There is.
“Starting in April 2024, we will begin denying non-compliant traffic. Denials will occur in stages and will only impact non-compliant traffic,” the company said in a recently updated support document.
“We strongly encourage senders to take advantage of the temporary disability period to make the necessary changes to become compliant.”
Google will begin enforcing these new requirements in June to block spam, phishing attacks, and malware from reaching users’ inboxes.