SMTP error X.7.19
RRVS test cannot be completed
Updated Jul 1, 2026
The short answer
RRVS test cannot be completed Common cause: Receiver lacks timestamp data required for RRVS validation
Quick fix
Decide whether to resend without RRVS protection
This code is written X.7.19 because the reason is the same whether the failure
is temporary (a 4 first digit) or permanent (a 5). Read the first digit of your
own bounce to know which applies.
How to fix it
Decide whether to resend without RRVS protection