m (→What is DKIM?)
Even if messages are just signed, then this can help them not to be marked as spam by the recipient. This can help prevent messages that our customers send to gmail/outlook being put in to spam folders.
====Long txt records====
If you are adding your own txt records and they are over 256 characters long, see [[Domains:DNS_Types]] for details on how to 'split' the record in to separate chunks.