Server email guides covering SMTP, Exim, deliverability, authentication, queues and abuse investigation.
How to diagnose why an Exim mail queue in cPanel is stuck or frozen, find the actual source instead of just deleting messages, and clear it without it filling back up.
If your Plesk server suddenly starts sending large volumes of unwanted emails or your IP gets blacklisted, there’s a good chance that one of your mailboxes or websites has been […]
You spend hours setting up your mail server, configure every setting carefully, hit send - and your message lands straight in the spam folder.
WordPress sends emails using the PHP Mail function by default. However, it is preferable to utilise SMTP because it is more efficient at transmitting messages and may also be used […]
When a cPanel server starts sending spam, everything breaks at once - mail queues explode, clients panic, IPs get blacklisted, and outgoing SMTP becomes unreliable.
Exim's retry message is a scheduling decision, not the original mail error. Use exinext and the Exim log to find the first failure, correct it, then clear only the relevant retry state.
