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

Applicable to:

• Plesk Onyx for Linux
• Plesk Onyx for Windows

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 that is going to be fixed in future extension updates.

Resolution

For Linux:

Apply the custom fix as follows:

1. Connect to the server via SSH.

2. Create a backup of the original route53.php file:

   # mv /usr/local/psa/admin/plib/modules/route53/scripts/route53.php{,.bak}

3. Download the attached file and unzip it:

   # wget https://plesk.zendesk.com/hc/article_attachments/360001160913/route53.zip
   # unzip route53.zip

4. Place patched route53.php into the correct directory:

   # mv route53.php /usr/local/psa/admin/plib/modules/route53/scripts/route53.php

For Windows:

As a workaround, put additional double quotes in the beginning and ending of the record:

1. Log into Plesk.

2. Go to Domains > example.com > DNS Settings:
   

3. Make sure that there is the DKIM policy record (add it if it missing), e.g:

   CONFIG_TEXT: _domainkey.example.com. IN TXT o=-;

4. Set Google selector record:

   CONFIG_TEXT: google._domainkey.example.com IN TXT ""v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAraC3pqvqTkAfXhUn7Kn3JUNMwDkZ65ftwXH58anno/bElnTDAd/idk8kWpslrQIMsvVKAe+mvmBEnpXzJL+0LgTNVTQctUujyilWvcONRd/z37I34y6WUIbFn4ytkzkdoVmeTt32f5LxegfYP4P/w7QGN1mOcnE2Qd5SKIZv3Ia1p9d6uCaVGI8brE/7zM5cz" "MthVPE2WZKA28+QomQDH7ludLGhXGxpc7kZZCoB5lQiP0o07Ful33fcED73BS9Bt1SNhnrs5v7oq1pIab0LEtHsFHAZmGJDjybPA7OWWaV3L814r/JfU2NK1eNu9xYJwA8YW7WosL45CSkyp4QeQIDAQAB""