some recipients unable to reply to my emails

[Netherchelle5]

Emails that I am sending to my daughters school are being received but all of sudden this week when the school is replying their emails are being bounced back as undeliverable. Here is an example of the technical message from their email server  when the email is rejected - 

Reason: [{LED=552 5.2.0 zHC8rEgQPDxSbzHC8rHaA4 Content rejected (TT992)};{MSG=};{FQDN=mx.tiscali.co.uk};{IP=62.24.139.42};{LRT=4/23/2024 2:32:28 PM}]. OutboundProxyTargetIP: 62.24.139.42. OutboundProxyTargetHostName: mx.tiscali.co.uk

I'm not having any problems that I'm aware of with any other recipients. 

Any help gratefully received!

[Ady-TalkTalk]

Hi Michelle, thanks for posting back to let us know its sorted. 

Ady

[Netherchelle5]

Hi Ady,

Thanks for replying to my query. It seems that the problem I had is now fixed.

Many thanks,

Michelle. 

[Ady-TalkTalk]

Hi Michelle, the problem was fixed on Thursday at 1.30pm. Are you still seeing problems with the error?

Ady