550 Phishing bounce back message on Outlook

[Vicki1]

I am getting the following message as a bounce back on Outlook 

            550 spam, or phishing or malware.  Please check or edit your message and try sending it again. (6-1-3-2) ID (613006A90D442386)

The message can be sent direct from my BT account but not through Outlook. Email addresses that were fine earlier on today are now getting this message. Apparently BT can fix this by adjusting their filters - if so how can I get them to do this?

[NeilO]

Hi @Vicki1 welcome to the community and thanks for posting, I'm sorry to see you're having problems sending emails. I'll send you a private message so you can send over your details and we'll be happy to ask our email experts to take a look.

You'll get the private message by clicking on the envelope in the top right of the community.

Thanks

Neil