https://community.plus.net/t5/Email/Hundreds-iof-Mail-delivery-failed-messages/m-p/2034879#M57279 <P>Change your password…….</P> Wed, 14 Jan 2026 16:24:31 GMT Champnet 2026-01-14T16:24:31Z https://community.plus.net/t5/Email/Hundreds-iof-Mail-delivery-failed-messages/m-p/2034876#M57277 <P>I was migrated to Greenby in Dec despite having broadband with Plusnet.</P><P><SPAN>Over the last few days I </SPAN>am receiving thousands of "mail delivery failed" messages in my inbox for emails I didn't send. I think someone is using my email address to send out spam.</P><P>There are no sent messages which&nbsp; suggests they have not hacked my Plusnet email account directly and sending the messages from there.</P><P>It seems they have some way of sending out spam emails and any failed deliveries or replies get sent back to my email address.</P><P>HELP! Any ideas how to stop this or suggestions what to do would be very much appreciated.</P> Wed, 14 Jan 2026 16:06:14 GMT https://community.plus.net/t5/Email/Hundreds-iof-Mail-delivery-failed-messages/m-p/2034876#M57277 midd35 2026-01-14T16:06:14Z https://community.plus.net/t5/Email/Hundreds-iof-Mail-delivery-failed-messages/m-p/2034879#M57279 <P>Change your password…….</P> Wed, 14 Jan 2026 16:24:31 GMT https://community.plus.net/t5/Email/Hundreds-iof-Mail-delivery-failed-messages/m-p/2034879#M57279 Champnet 2026-01-14T16:24:31Z https://community.plus.net/t5/Email/Hundreds-iof-Mail-delivery-failed-messages/m-p/2034887#M57282 <P>Do I need to do it at Plusnet or Greenby?</P> Wed, 14 Jan 2026 16:55:40 GMT https://community.plus.net/t5/Email/Hundreds-iof-Mail-delivery-failed-messages/m-p/2034887#M57282 midd35 2026-01-14T16:55:40Z