Rejected email requests

[flight4mation]

A few of my website account send have send me a text about an ISP rejecting their email request to me. My email address is correct. They appear to be blaming my ISP, EE Broadband . Any ideas?

[JimM11]

@flight4mation As an ISP, what has EE got to do with your e-mail address?

[flight4mation]

I have EE Broadband to connect to the internet. This    Important: We're unable to send you emails such as password resets, as your email was rejected by your ISP (error: "3"). Please update your email "hand******@********.com"is the text message I received from giffgaff:

[Mod edit: Removed your email address for safety. Don't post email addresses on public forums.]

[XRaySpeX]

You have a dynamic public IP addy. A previous user of your current IP addy may have been using emails to scam or other naughty activities, has been caught at it & their IP addy put on a blacklist. Check your IP addy against Spamhuus - IP and Domain Reputation Checker & other such checkers found on Google.

Try rebooting router to acquire a fresh new clean public IP addy.