email-domain-check/dist/esm/types/error.js

Comprehensive email domain validation library with DNS, MX, SMTP, DKIM, DMARC and MTA-STS support.

import dns from "node:dns";
export const DNS_ERRORS = {
    NODATA: dns.NODATA, // No data: query completed but no records of requested type
    FORMERR: dns.FORMERR, // Format error: name server could not parse the query
    SERVFAIL: dns.SERVFAIL, // Server failure: general server-side failure
    NOTFOUND: dns.NOTFOUND, // Name error / NXDOMAIN: domain does not exist
    NOTIMP: dns.NOTIMP, // Not implemented: server does not support requested operation
    REFUSED: dns.REFUSED, // Refused: server refused to perform the operation
    BADQUERY: dns.BADQUERY, // Bad query: malformed query from client
    BADNAME: dns.BADNAME, // Bad name: invalid domain name in query
    BADFAMILY: dns.BADFAMILY, // Bad family: address family not supported (e.g., IPv6/IPv4 mismatch)
    BADRESP: dns.BADRESP, // Bad response: malformed response from server
    CONNREFUSED: dns.CONNREFUSED, // Connection refused: transport-level connection refused
    TIMEOUT: dns.TIMEOUT, // Timed out: operation exceeded allowed time
    EOF: dns.EOF, // Unexpected EOF from underlying stream/socket
    FILE: dns.FILE, // File error: problem reading/writing a file
    NOMEM: dns.NOMEM, // Out of memory
    DESTRUCTION: dns.DESTRUCTION, // Resolver destroyed while operation in progress
    BADSTR: dns.BADSTR, // Bad string: invalid string in input
    BADFLAGS: dns.BADFLAGS, // Bad flags provided to resolver API
    NONAME: dns.NONAME, // No name/host information available
    BADHINTS: dns.BADHINTS, // Bad hints passed to resolver (invalid auxiliary data)
    NOTINITIALIZED: dns.NOTINITIALIZED, // Resolver not initialized before use
    LOADIPHLPAPI: dns.LOADIPHLPAPI, // Windows: failed to load IP helper API
    ADDRGETNETWORKPARAMS: dns.ADDRGETNETWORKPARAMS, // Windows: failed to obtain network params
    CANCELLED: dns.CANCELLED, // Operation was canceled
};