Smtp Load Balancing ((better)) -

More sophisticated balancers (e.g., Envoy, HAProxy in HTTP mode with smtp checks, or custom proxies) peek inside the SMTP conversation. They can read:

SMTP load balancing is a critical component of ensuring reliable email delivery. By distributing email traffic across multiple mail servers, SMTP load balancing improves email delivery reliability, scalability, and performance. Organizations that rely heavily on email communication should consider implementing SMTP load balancing to ensure that their email delivery is not affected by server failures or delays. By following best practices and choosing the right load balancing algorithm, organizations can ensure reliable and efficient email delivery. smtp load balancing