![mail(): Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" - YouTube mail(): Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" - YouTube](https://i.ytimg.com/vi/Pfvlpw7Q-uQ/maxresdefault.jpg)
mail(): Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" - YouTube
![Ubuntu 18.04 - Issues and curl: (7) Failed to connect to localhost port 8888: Connection refused · Issue #25 · EOSIO/eosio-project-demux-example · GitHub Ubuntu 18.04 - Issues and curl: (7) Failed to connect to localhost port 8888: Connection refused · Issue #25 · EOSIO/eosio-project-demux-example · GitHub](https://user-images.githubusercontent.com/40128659/44989875-2b116f80-af44-11e8-99d6-3042a8efda51.png)
Ubuntu 18.04 - Issues and curl: (7) Failed to connect to localhost port 8888: Connection refused · Issue #25 · EOSIO/eosio-project-demux-example · GitHub
![apache - localhost:8080 works, localhost/localhost:80 doesn't - but port forwarding is enabled? - Stack Overflow apache - localhost:8080 works, localhost/localhost:80 doesn't - but port forwarding is enabled? - Stack Overflow](https://i.stack.imgur.com/GEzfm.png)