Deliverability Issues to BTinternet recipients

[Zach]

I manage the sending architecture of an ESP. We are working on diagnosing an issue of elevated soft bounces with BTInternet recipients. We've tried to reach out to postmaster@btinternet.com, but have yet to get a response. Is there someone that we could reach out to directly for some guidance? A couple bounce messages are as follows:

421 Policy (1.2.6.1) Too much SPAM received from 1.2.3.4.5 on 2020/11/10 10:44:47 GMT. As we detected too much spam, we protected our customers by not allowing any more emails from this IP till we notice an improvement. You may have been affected unknowingly through your email provider. Please contact your email provider to assist. Our Postmaster will be unable to help you.
email provider. Please contact your email provider to assist. Our Postmaster will be unable to help you.
421 Policy (1.3.6.1) Too much SPAM received from 1.2.3.4.5 on 2020/11/10 17:04:25 GMT. As we detected too much spam, we protected our customers by not allowing any more emails from this IP till we notice an improvement. You may have been affected unknowingly through your email provider. Please contact your email provider to assist. Our Postmaster will be unable to help you.

[NeilO]

Hi @Zach welcome to the community and thanks for posting, I've sent you a private message so you can get in touch with the moderation team and we'll be happy to raise this with the postmaster on your behalf. 

[dyenchris]

Hi @NeilO ,

I have the same problem. Could you tell me how to get in touch with the moderation team?

[DanielS]

Hi @dyenchris,

Are you following all of our best practices for postmasters?

If yes, what date and time did you contact our postmaster team so they can track it?

Thanks
DanielS