Is the Royal Aeronautical Society (@aerosociety.com) on the Spam list? I am trying to correspond with them and they are not receiving my emails and I am not getting non-delivery messages. I tried sending a message earlier this week and received the following -
Spam filters are in a state of perpetual update and usually false positives are automatically cleared; as appears to have been the case when you could not send emails to aerosociety.com earlier but can now.
Have you checked your Spam folder for non-delivery notice emails?
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