- Plesk for Linux
- Incoming and outgoing emails are not delivered to recipients;
/var/log/maillogcan be found that all emails are rejected with the one type of message:
CONFIG_TEXT: delivery temporarily suspended: host mx.example1.com[203.0.113.2] refused to talk to me: 550 exceeded hourly smtp traffic
host mx.example2.com[192.0.2.2] refused to talk to me: 550 exceeded hourly smtp traffic
Internet service provider blocks SMTP traffic due to the exceeded limit set on the side of internet service provider.
Consult with collocation and internet service providers to determine the origin of network block and consider to enable limitation for outgoing emails with reference to our documentation: Limiting Outgoing Mail.