Is port 2525 (SMTP Alternate) dangerous?

Port 2525 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 2525 be open on my firewall?

Port 2525 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 2525 use?

Port 2525 (SMTP Alternate) uses the TCP transport protocol and falls under the Email category.

:2525 (TCP)

SMTP Alternate

Medium Riesgo

TCP — Email

Resumen del puerto

Número de puerto 2525

Nombre del servicio SMTP Alternate

Protocolo de transporte TCP

Categoría Email

Riesgo de seguridad Medium

Rango de puertos Registrados (1024-49151)

Qué es el puerto 2525?

Port 2525 is a commonly used alternate SMTP port for outbound email submission, particularly useful when ISPs block the standard ports 25 and 587. Many email service providers like SendGrid, Mailgun, and Postmark support port 2525 for SMTP relay. It is especially popular for cloud hosting environments where port 25 is blocked by default.

TCP Email De uso común

Consideraciones de seguridad

El puerto 2525 (SMTP Alternate) está clasificado como riesgo medio. Aunque este servicio se expone comúnmente, considera usar alternativas cifradas cuando estén disponibles.

Recomendación: Mantén el servicio actualizado. Monitorea los registros en busca de actividad inusual.

Puertos relacionados — Email

24 Private Mail System 25 SMTP 26 RSFTP 50 RE-MAIL-CK 58 XNS-MAIL 109 POP2 110 POP3 143 IMAP

Términos relacionados

ARP FTP HTTP ICMP IMAP NTP