launchora_img

How to Fix SMPT Error Code 550

Info

Introduction

Learn how to resolve a common SMTP 550 "Relay Denied" error. This error often occurs because of incorrect authentication on the SMTP server. Learn more about SMTP authentication procedures and how to resolve this error.

Overview of SMPT error 550

The SMTP error code 550 means that the recipient of this email could not be reached. This code may appear for several reasons, such as a wrong email address.

Error 550 "Forwarding rejected" means that the SMTP server did not recognize you as a legitimate sender. The most common cause of the error is the lack of proper authentication on all SMTP servers. This can happen if:

* The SMTP password was not entered correctly.

* The e-mail client does not use the appropriate protocol     (such as SMTP-AUTH) to send e-mails.

* The best way to solve this problem is to use the email client setup procedure, test and configure the appropriate email address settings.

Evaluating the SMTP Authentication Method

For example, some servers require users to log in to SMTP using a username and password, but others ask to connect to POP3 before sending an email.

Then go through the email client installation process and make sure you set the correct SMTP authentication method. Many email clients have the "autodiscover" or even "autodetect" attribute for SMTP installations. This is a trusted way to set up SMTP authentication in the email client, but if the SMTP error still occurs, you may need to manually establish the email client.

Authentication

* No

* Kerberos / GSSAPI

* NTLM

You can confirm which system your SMTP host is using.

This may seem obvious, but if your SMTP server requires a password, make sure you enter the password correctly. For complex passwords, you can enter the password in a text editor such as Notepad, and then copy and paste the password into the email client.

Confirm SMTP port

The normal SMTP port is 25, which is really the default SMTP port used by most email clients. But SMTP services can be configured for different openings and you will need to configure the e-mail client accordingly.

The most common SMTP ports are:

* 25

* 587

* 465

* 2525

If you are sending an email from outside the firewall, you must confirm that the appropriate interface is also available in the firewall to allow traffic flow.

Solve problems with the SSL method This is usually reliable, but if the SMTP error still occurs, you must manually evaluate the SMTP authentication method.

There are many potential SSL and authentication combinations available for SMTP servers. Currently, the most common varieties are:

SSL

* No

* STARTTLS

* SSL / TLS

If an SMTP error occurs when sending email from one location, but not from another, and you use the same email client, The SMTP server can be installed to authorize users from a specific IP address or range of addresses.

For example, if you have a notebook with Outlook configured and you can send emails from home, but not from work, the IP address filtering is the fault.

There may also be a firewall problem.


Be the first to recommend this story!
launchora_img
More stories by George
Resolve Avast issues with Avast technical support ...

The antivirus program is now provided with complete Avast technical support in more than 30

00
Why does the printer show the connecting error on ...

Printers are essential tools for any small or large business. The latest models of printers ...

00
What are the steps to install a Avast agent on Lin...

Are Linux devices getting infected? Well, the chance of getting infected with Windows OS is less on

00

Stay connected to your stories

How to Fix SMPT Error Code 550

70 Launches

Part of the Something Else collection

Published on November 20, 2019

Recommended By

(0)

    WHAT'S THIS STORY ABOUT?

    Characters left :

    Category

    • Life
      Love
      Poetry
      Happenings
      Mystery
      MyPlotTwist
      Culture
      Art
      Politics
      Letters To Juliet
      Society
      Universe
      Self-Help
      Modern Romance
      Fantasy
      Humor
      Something Else
      Adventure
      Commentary
      Confessions
      Crime
      Dark Fantasy
      Dear Diary
      Dear Mom
      Dreams
      Episodic/Serial
      Fan Fiction
      Flash Fiction
      Ideas
      Musings
      Parenting
      Play
      Screenplay
      Self-biography
      Songwriting
      Spirituality
      Travelogue
      Young Adult
      Science Fiction
      Children's Story
      Sci-Fantasy
      Poetry Wars
      Sponsored
      Horror
    Cancel

    You can edit published STORIES

    Language

    Delete Opinion

    Delete Reply

    Report Content


    Are you sure you want to report this content?



    Report Content


    This content has been reported as inappropriate. Our team will look into it ASAP. Thank You!



    By signing up you agree to Launchora's Terms & Policies.

    By signing up you agree to Launchora's Terms & Policies.