- Check the domain’s MX record — if your mail is with us, it should point to
mail.yourdomain. - If the mailbox quota is full, new messages are rejected — delete old messages or increase the quota.
- Check the port and encryption in your app settings — see IMAP / SMTP settings.
- If your sent message bounces, send support the error text from the bounced message.
- Sign in to DenizMail and check: if it works there, the problem is in your device app’s settings.
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