How to set a DKIM record for a domain hosted within Route 53 when the mail server is not in AWS

Question

I have a domain that is managed in Route 53, but the servers are somewhere else.

My emails from that domain are being rejected for not having SPF and DKIM.  I was able to set SPF within Route 53, but not DKIM. The key i brought from the mail server hosting is being rejected for being too long (as a TXT record) and it is not clear or evident solution is being offered by Route 53.

Error occurred
Bad request.
(InvalidChangeBatch 400: CharacterStringTooLong (Value is too long) encountered with '"default._domainkey 14400 IN TXT \"v=DKIM1;k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC9LPp1DUrKuStMOP9c1SU1mK.... .....

Answer

You need to split your TXT record value to multiple strings as described in [this post](https://repost.aws/knowledge-center/route53-resolve-dkim-text-record-error)

This is because of the protocol limitation of 255 characters (not Route 53 limitation).

How to set a DKIM record for a domain hosted within Route 53 when the mail server is not in AWS

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