MAIL FROM record is not aligned.

Hello,

I found these links which may be useful to you:

• https://docs.aws.amazon.com/ses/latest/dg/send-email-authentication-dmarc.html#send-email-authentication-dmarc-spf.
• https://docs.aws.amazon.com/ses/latest/dg/mail-from.html#mail-from-set

And there are related descriptions in other answers:

To solve the problem, change your SPF and DKIM alignment in the DMARC record from strict to relaxed. To do this, change adkim=s and aspf=s from s (strict) to r (relaxed); adkim=r and aspf=r.

The domain in the From address of the email header must align with the MAIL FROM domain that the sending mail server specifies to the receiving mail server. If the domain's DMARC policy for SPF specifies strict alignment, the From and MAIL FROM domains must match exactly. If the domain's DMARC policy for SPF specifies relaxed alignment, the MAIL FROM domain can be a subdomain of the domain in the From header.

Please open a support case. Simply configuring a custom MAIL FROM domain, and ensuring that the DMARC policy does not have "aspf=s", is enough to resolve "MAIL FROM record is not aligned". Something else must have been changed to cause the new error.

Great thanks for that, seems to be working now cheers!