Unable to add AWS Route 53 domains with DKIM keys: CharacterStringTooLong (Value is too long)

Symptoms

• Adding domain to Amazon Route 53 fails with the following error in Plesk UI:

  PLESK_ERROR: 'CharacterStringTooLong (Value is too long)

• DKIM keys with a bit length of 2048 are enabled for the domain.

• When using dig utility, TXT-record is not concatenated, it gets broken into two parts:

  # dig @ 203.0.113.2 TXT example1.com
  ...
  ;; ANSWER SECTION:
  example.com. 86400 IN TXT "v=spf1 +a +mx +a:user.centos6 -all"
  example.com. 86400 IN TXT "v=DKIM1\; k=rsa\; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAraC3pqvqTkAfXhUn7Kn3JUNMwDkZ65ftwXH58anno/bElnTDAd/idk8kWpslrQIMsvVKAe+mvmBEnpXzJL+0LgTNVTQctUujyilWvcONRd/z37I34y6WUIbFn4ytkzkdoVmeTt32f5LxegfYP4P/w7QGN1mOcnE2Qd5SKIZv3Ia1p9d6uCaVGI8brE/7zM5cz" "MthVPE2WZKA28+QomQDH7ludLGhXGxpc7kZZCoB5lQiP0o07Ful33fcED73BS9Bt1SNhnrs5v7oq1pIab0LEtHsFHAZmGJDjybPA7OWWaV3L814r/JfU2NK1eNu9xYJwA8YerWosL45CSkyp4QeQIDAQAB"

Cause

Amazon Route 53 extension bug with ID EXTPLESK-286 which has been already fixed.

Resolution

Update Amazon Route 53 extension to the latest available version.