SMTPS: Port to use to secure SMTP with SSL/TLS - PowerPoint PPT Presentation

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SMTPS: Port to use to secure SMTP with SSL/TLS

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SMTP is an acronym for Simple Mail Transfer Protocol. It is a set of communication protocols that allows applications to send electronic mail over the internet. It's an application that uses email addresses to deliver messages to other computer users. It allows users on the same or separate computers to exchange mail. – PowerPoint PPT presentation

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Title: SMTPS: Port to use to secure SMTP with SSL/TLS


1
SMTPS Port to use to secure SMTP with SSL/TLS
  • What Is SMTP?
  • SMTP is an acronym for Simple Mail Transfer
    Protocol. It is a set of communication protocols
    that allows applications to send electronic mail
    over the internet. It's an application that uses
    email addresses to deliver messages to other
    computer users. It allows users on the same or
    separate computers to exchange mail.
  • It can transmit a single message to one or many
    recipients. Text, audio, video, and images may
    all be used to send messages. It can also send
    messages on networks outside the internet. SMTP
    is mostly used to establish communication rules
    between servers. The servers have a mechanism for
    identifying themselves and stating the type of
    communication they are attempting. They also have
    a system in place to deal with issues like wrong
    email addresses.

2
SMTPS vs. SMTP
  • In comparison to SMTP, SMTPS adds extra SSL or
    TLS cryptographic methods for increased security.
    The S stands for Secure.
  • The SMTP protocol does not include encryption by
    default, therefore it may be used to send emails
    without any security. As a result, emails sent
    using SMTP are vulnerable to man-in-the-middle
    attacks or bad actors eavesdropping while the
    email is in transit. SMTPS, on the other hand,
    uses asymmetric cryptography to encrypt email
    conversations using TLS or SSL.

3
Drawbacks of SMTP
  • SMTPS-unsecured email is subject to a number of
    attacks that can alter the contents of a message
    or redirect it to an attacker before being
    delivered to the intended recipient.
  • By inserting their own malicious SMTP commands
    into data as it is transferred from a server,
    attackers take advantage of the unencrypted
    interactions. These attacks can be used to send
    spam from the vulnerable domain, steal sensitive
    data invisibly, or carry out phishing assaults.

4
Steps to Enable SMTPS 
  • Enabling TLS on your mail server will secure
    SMTP. Enabling TLS encrypts the SMTP protocol on
    the transport layer by enclosing it behind a TLS
    connection. This successfully secures SMTP and
    converts it to SMTPS.
  • SMTPS traffic is commonly routed on ports 587
    and 465. STARTTLS, which allows the email client
    to establish secure connections by requesting
    that the mail server upgrade the connection to
    TLS, is frequently used to encrypt SMTP
    communications via Port 587. 
  • Implicit TLS is utilized on port 465, which can
    be used to allow secure email communications.
    This is suggested overusing STARTTLS on port 587,
    according to the IETF.
  • Finally, port 2525 is occasionally utilized. To
    prevent consumers from creating their own mail
    servers, some residential ISPs would restrict
    port 25. Hobbyists and tiny home enterprises
    utilize port 2525 to combat this.
  • Users can check their client settings to see if
    SMTP is enabled in their email client. Users of
    Outlook can confirm this by doing the following
    steps

5
  • Click on File gt Accounting Settings. Then open
    the Account Settings box.
  • Choose your email from the Email tab, then click
    on the Change icon. In the Server Information
    section, ensure that the Outgoing Mail Server is
    set to your mail server address.
  • Under the Outgoing Mail tab, ensure that SMTP
    requires authentication is checked.
  • SMTPS can be enabled by system administrators
    via their SMTP connector's settings. Depending on
    whatever mail server you're using, this step will
    be different. There are choices for specifying
    the authentication type when configuring the SMTP
    connection, and TLS is one of them.

6
  • SMTPS protects messages while in transit from
    prying eyes. What about spoofing, phishing, and
    spam, though? Let's have a look at some email
    security standards you may use to secure your
    email and domain.
  • Sender Policy Framework (SPF) Assists receivers
    in verifying that messages sent from your domain
    are indeed from you. SPF informs the rest of the
    world about the servers from which you and other
    domain owners like you send emails. The SPF check
    fails if a message is received from your domain
    that does not come from these servers.
  • DKIM (Domain Keys Identified Mail) adds an extra
    layer of email authentication by adding a digital
    signature to the messages. This helps prevent
    tampering with communications while they are en
    route
  • DMARC (Domain-based Message Authentication,
    Reporting, and Conformance) is a technical
    definition for authenticating communications by
    combining SPF and DKIM capabilities. One of the
    greatest methods to defend your brand against
    impersonation is to have DMARC completely enabled
    on your domain.
  • Brand Indicators for Message Identification
    (BIMI) provides an extra degree of safety for
    domains that already use DMARC for authentication
    by displaying their brand logo in email
    communications. This makes it easier for
    receivers to tell if an email is real, and it
    also helps organizations increase brand
    recognition through email advertising.
  • EmailAuth helps you with all of the following by
    automating DMARC, SPF, DKIM, and BIMI for your
    brand and helps you secure your emails without
    additional hassle. Check out EmailAuth.
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