Mail to gmail address consistently failing

Mail to gmail address consistently failing

Hi,

I am trying to send an email to support@telly.com which fails permanently each time I try.  The delivery report says to check gmail's guidelines on bulk senders - however I am not a bulk sender, and everything is fine as far as I can see.  The address I am sending from is my business address - jon@audiobaymanagement.com.

Please could you advise?

Thanks

Jon