47 lines
1.5 KiB
TypeScript
47 lines
1.5 KiB
TypeScript
import net from "net";
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import dns from "dns";
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export default function verifyEmailSMTP(email: string): Promise<boolean> {
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return new Promise((resolve, reject) => {
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const domain = email.split("@")[1];
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dns.resolveMx(domain, (err, addresses) => {
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if (err || !addresses.length) {
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console.log("Invalid email domain.");
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return;
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}
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const mxServer = addresses[0].exchange;
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console.log(`Connecting to ${mxServer} to verify email...`);
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const client = net.createConnection(25, mxServer);
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client.on("connect", () => {
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console.log("Connected to SMTP server.");
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client.write("HELO example.com\r\n");
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client.write(`MAIL FROM: <test@example.com>\r\n`);
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client.write(`RCPT TO: <${email}>\r\n`);
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});
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client.on("data", (data) => {
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const response = data.toString();
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if (response.includes("250")) {
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console.log("✅ Email exists!");
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resolve(true);
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} else {
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console.log("❌ Email does not exist.");
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resolve(false);
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}
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client.end();
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});
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client.on("error", (err) => {
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console.log("SMTP verification failed:", err.message);
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resolve(false);
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});
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});
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});
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}
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