newaytech

Nasty – for anyone else who arrives here; hardening of wp-content directory helps to prevent web user from having write access. Restore from backup – and confirm no files have been changed. Install further 2FA plugin and deny access to any wp-admin areas by use of IP based Cloudflare WAF rule or similar. We use this module to hook into SendGrid – have kept with it – but kept logging off – as they appear in SendGrid regardless.

• This reply was modified 10 months, 2 weeks ago by newaytech.

Hi Matt – thanks for checking in. Other integrations offer retry / logging mechanisms on the event of a sending failure. As there is no way of knowing if an email has not been sent – the “transaction” side of the solution does not really happen. We’ve decided to migrate away from Mandrill – as, to your point – the error was on the mandrill side – and their support has been less than helpful. We’re nearly there now in terms of migrating all of our managed sites to SendGrid… Leaving this here for Googlers – incase anyone else stumbles across the same error code in their logs…