Platform
Docs
Solutions
ContactLog In

Error: SMTP Error 250

What's Causing This Error

SMTP error 250 typically indicates that the SMTP client failed to authenticate the user due to invalid user credentials or misconfigurations within the client.

Solution - Here's How To Resolve It

It is essential to pay attention to the following parameters when resolving this error:

  1. SMTP TLS Protocols
  2. SMTP TLS Ciphers

The user credentials may also require validation to ensure that the email server accepts them.

Other Common SMTP Errors (and Solutions)

View all errors

Build your first notification in minutes

Send up to 10,000 notifications every month, for free.

Get started for free

Email & push notification

Build your first notification in minutes

Send up to 10,000 notifications every month, for free.

Get started for free

Email & push notification

Platform

Users

Content

Channels

Sending

Workflows

Preferences

Inbox

Workspaces

Observability

API Status

Changelog

© 2024 Courier. All rights reserved.