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Plusnet Email servers giving random SMTP 550 errors for inbound emails

Townman
Superuser
Superuser
Posts: 17,692
Thanks: 7,370
Fixes: 71
Registered: ‎22-08-2007

Re: Plusnet Email servers giving random SMTP 550 errors for inbound emails

All domain names are checked, not just for spam purposes but to ensure that ANY failure message can be sent.

The 0.03% figure refers to the number still failing after multiple retries compared to all emails successfully processed.

Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.