When a customer places an order, I receive a copy of an auto-generated message that is sent to them. It says -

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Thank you for your inquiry.

We have received your email and will respond within 24 hours.
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This is obviously wrong, and I need to correct it but I don't know where the message is coming from.

I tried finding it using my Developer's Tool Kit, and I also went through several .php files hoping to find where to edit it with no luck.

Can someone point me in the right direction so that I can address this.

Thanks so much for your continued support. I really appreciate it.