Algunas veces los programas de correo electrónico como el Outlook devuelven mensajes de error de socket al intentar enviar un mail. Con esta página podrás saber qué significan. El socket es el driver que se encarga de establecer la conexión con el servidor de correo, y hay una serie de posibles condiciones de error que pueden afectarlo.
Esta tabla complementa la info que puede suministrarte la Tabla de Errores de SMTP.
| Código | Significado |
| 0 | Directly send error |
| 10004 | Interrupted function call |
| 10013 | Permission denied |
| 10014 | Bad address |
| 10022 | Invalid argument |
| 10024 | Too many open files |
| 10035 | Resource temporarily unavailable |
| 10036 | Operation now in progress |
| 10037 | Operation already in progress |
| 10038 | Socket operation on non-socket |
| 10039 | Destination address required |
| 10040 | Message too long |
| 10041 | Protocol wrong type for socket |
| 10042 | Bad protocol option |
| 10043 | Protocol not supported |
| 10044 | Socket type not supported |
| 10045 | Operation not supported |
| 10046 | Protocol family not supported |
| 10047 | Address family not supported by protocol family |
| 10048 | Address already in use |
| 10049 | Cannot assign requested address |
| 10050 | Network is down |
| 10051 | Network is unreachable |
| 10052 | Network dropped connection on reset |
| 10053 | Software caused connection abort |
| 10054 | Connection reset by peer |
| 10055 | No buffer space available |
| 10056 | Socket is already connected |
| 10057 | Socket is not connected |
| 10058 | Cannot send after socket shutdown |
| 10060 | Connection timed out |
| 10061 | Connection refused |
| 10064 | Host is down |
| 10065 | No route to host |
| 10067 | Too many processes |
| 10091 | Network subsystem is unavailable |
| 10092 | WINSOCK.DLL version out of range |
| 10093 | Successful WSAStartup not yet performed |
| 10094 | Graceful shutdown in progress |
| 11001 | Host not found |
| 11002 | Non-authoritative host not found |
| 11003 | This is a non-recoverable error |
| 11004 | Valid name, no data record of requested type |
