If you have multiple email accounts in Microsoft Outlook, puede cambiar la dirección “From” in a new email. This is faster than switching to a different inbox and allows you to send emails from different addresses., even if they are not yours. Here is how, with some caveats.
Outlook enables you to send emails from any account you have configured in the email client, but also from any other email address, even if you haven't configured it. That sounds worrisome, and in some circumstances it is, but there are legitimate reasons to use this functionality, at the same time of other nefarious.
We will see how this works and how email providers prevent people from using it for harmful purposes.
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Quickly switch between email addresses
First, Let's go over the totally legitimate procedure. Para cambiar la dirección “From”, debe hacer visible el campo “From”. Open a new email in Microsoft Outlook and then click Options> From. Cco “From” sea visible.
Para cambiar la dirección “From”, Click the button “From” y seleccione una de las direcciones de email que ha agregado a Outlook.
La dirección de email en el campo “From” cambiará y, when I send an email, will be shipped from that address.
If all you want to do is quickly switch between your email accounts when sending emails, that is all.
But, What if you want to send an email from an account that you have not added to Outlook? Well, Outlook will also allow you to do that, under certain circumstances.
Redacte un nuevo email y posteriormente haga clic en el botón “From” again. From there, select option “Otra dirección de email”.
In the panel that opens, escriba la dirección desde la que desea enviar un email y haga clic en “To accept”.
Now send the message regularly. Will the email be sent or will you receive a delivery error notification? And if it is sent, Will the recipient see it as coming from the email address they used, even if it's not yours?
Both answers depend on who your email provider is..
Cómo manejan los proveedores de email los mensajes enviados desde una dirección “From” different
Microsoft Outlook itself and other email clients such as Thunderbird or Apple Mail do not check the email address from which you send. The client simply sends the email to the provider's SMTP server (Simple Mail Transfer Protocol server, often called mail server) and let the SMTP server decide what to do with your email.
What will happen to your email depends entirely on how your email provider's SMTP server is configured.
The big email providers, like Google, Microsoft, Apple y Yahoo, they use something called SPF (Sender Policy Framework), DMARC (Authentication, domain-based message reporting and compliance), and DKIM (Email identified with domain keys) to avoid (among other things) have people send emails from addresses (identity fraud) that are not yours. The way each provider handles this situation is a bit different..
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Google simply ignores the new email address you have used and the recipient will see your Gmail address. In our example in the screenshots, Outlook sent the email to Gmail's SMTP server, which determined that the email address we were sending from —[email protected]— does not belong to us, so the recipient received an email from our original Gmail address.
Microsoft-hosted email accounts do things a little differently. If you try to send an email from an address that you do not have permission to enter, a Microsoft email server (commonly known as Exchange server) will not send the email. Instead, you will receive a delivery error notification.
Despite this, if your company uses a Microsoft Exchange server to handle your email, is regularly configured to allow you to send an email from any account to which you have access, even if that account has not been added to your Outlook.
As an example, if you have permission to send emails from "[email protected]", Outlook will send the email to the Exchange server and verify that you have permission to send emails from the address. Next, the server will send the email to the recipient, sin tener en cuenta si ha agregado la cuenta “[email protected]” a Outlook.
Otros proveedores de email de forma general manejarán los correos electrónicos con la dirección “wrong” de manera semejante a Google o Microsoft. The easiest way to find out is to test it in Outlook and see what happens. Despite this, check your provider's terms first, since some might have a provision against doing this.
¿Cómo usan los estafadores direcciones “From” falsas?
Large email providers have all kinds of checks and protocols to try to find spam and phishing emails, including emails sent from a fake address. Scammers and phishers don't use the big providers, instead they set up their own SMTP servers and send emails through them.
Despite this, scammers configure their SMTP servers to allow all your emails, Forcing big providers like Google and Microsoft into a constant arms race to detect and prevent phishing and fraudulent emails from reaching your inbox.
RELATED: How Scammers Spoof Email Addresses and How You Can Find Out
Your email provider, either Microsoft, Google, Apple, Yahoo or any other provider, scans the headers of every email you receive. Una de las cosas que buscan estas compañías es que la dirección “From” coincida con la dirección “Remitente”. If they don't match, especially if they are from totally different domains, it's a warning sign. It is not the only thing that email providers use to determine if an email is suspicious, but it is one of the most important checks they perform.
