Configure your domain for email usage and test email sending and receiving

Business email is not only a communication tool but also a reflection of your brand's professionalism. Using a custom domain email like yourname@yourcompany.com increases credibility while offering better data control and enhanced security.

However, to use email hosting effectively, you need to know how to properly configure your domain to ensure emails don't end up in spam and that sending and receiving are stable. In this article, Viet SEO will provide detailed instructions on configuration, how to check email quality, and introduce our professional and reputable business email support services since 2006.

What Is Email Hosting?

Email hosting is a service that stores and manages email on a dedicated server system. Unlike free email services such as Gmail or Yahoo, email hosting allows you to use email with your own domain name (e.g., contact@vietseo.com).

Benefits of email hosting:

• Demonstrates professionalism in communication with customers
• Higher security compared to free email services
• Easy management; create/edit/delete accounts flexibly
• Easily scalable as the business grows

Configure Your Domain to Use Email Hosting

To use email hosting, you need to point your domain to the email server through some required DNS records. This can be done at your domain registrar (such as GoDaddy, Namecheap, P.A Vietnam, Mắt Bão, etc.).

1. Required DNS Records for Email Hosting

Below are the important records you need to configure:

MX Record (Mail Exchange Record)

This is a mandatory record to specify which mail server will handle emails sent to your domain.

• Host/Name: @ (or leave blank, depending on DNS provider)
• Type: MX
• Value: mail.yourdomain.com or the MX address provided by your email hosting provider
• Priority: Lower value means higher priority (usually 10, 20...)

Example:

@ MX mail.vietseo.com Priority: 10

SPF Record (Sender Policy Framework)

SPF helps prevent email spoofing by verifying which mail servers are allowed to send email from your domain.

• Type: TXT
• Value: v=spf1 include:spf.emailserver.com ~all

Note: The SPF address may vary depending on your email provider (Google, Zoho, Viet SEO, etc.)

DKIM Record (DomainKeys Identified Mail)

DKIM helps authenticate the digital signature of an email to ensure that its content hasn’t been altered during transmission.

• Type: TXT
• Name: selector._domainkey.yourdomain.com
• Value: A long DKIM string provided by your email provider

Example:

default._domainkey TXT "v=DKIM1; k=rsa; p=MIGfMA0...IDAQAB"

DMARC Record (Domain-based Message Authentication, Reporting and Conformance)

DMARC is a record that helps you control how to handle emails that fail SPF or DKIM checks and also receive reports.

• Type: TXT
• Name: _dmarc.yourdomain.com
• Value: v=DMARC1; p=quarantine; rua=mailto:dmarc@yourdomain.com; fo=1

Where:

• p=none: just monitor, don’t block
• p=quarantine: send to spam if invalid
• p=reject: completely reject unauthenticated emails

2. DNS Propagation Time

After configuring the records, you need to wait from 15 minutes to 48 hours for DNS to propagate globally. You can check propagation status via tools such as:

• https://dnschecker.org
• https://mxtoolbox.com

How to Check If Your Email Is Working Properly

After completing the configuration, you need to check whether your email is functioning stably and sending correctly. Below are two popular and very useful tools:

1. Check Email Score with https://www.mail-tester.com

Mail-tester is a tool that helps evaluate whether your emails are reaching the inbox or spam by checking factors like SPF, DKIM, DMARC, email content, blacklists, etc.

How to use:

• Go to: https://www.mail-tester.com
• Copy the temporary email address provided (e.g., test-sample@mail-tester.com)
• From the email you want to check, send any email to that address
• Click “Check your score” and view the result

Results:

• Score from 9–10: Good, likely reaches inbox
• Score from 6–8: Needs optimization
• Below 6: Configuration needs to be reviewed

2. Check DKIM with https://dkimcore.org/tools/

This tool specifically checks whether your DKIM record is correctly configured.

How to use:

• Go to: https://dkimcore.org/tools/
• Enter:
  • Selector: usually default or mail
  • Domain: your domain (e.g., vietseo.com)
• Click "Check DNS"

Results:

• If it shows a TXT record with correct format ⇒ DKIM is working
• If it shows “No such record” ⇒ You need to check the TXT record again in DNS

Business Email Services at Viet SEO

In addition to specialized SEO services, Viet SEO also provides a professional business email service tailored for small and medium-sized businesses in Vietnam.

Reasons to choose Email Hosting from Viet SEO:

1. Custom domain – professional branding

• Email format like yourname@yourcompany.com enhances credibility
• Suitable for sales, customer service, and international partners

2. User-friendly interface – multi-device support

• Professional webmail, supports POP/IMAP
• Works well on Outlook, phones, and tablets

3. Security and stability

• Full support for SPF, DKIM, DMARC
• Servers located in Vietnam or internationally, as per client needs
• Spam protection, virus filtering, and data leak prevention

4. Dedicated technical support

• Domain configuration, account setup, device installation
• Lifetime support included
• Step-by-step guidance if clients want to do it themselves

Contact Viet SEO for Free Email Check

Not sure if your email is configured correctly? Are your emails going to the inbox?

Let Viet SEO check it for free, including:

• SPF, DKIM, DMARC check
• IP blacklist check
• Mail-tester score check
• Optimization consultation to ensure inbox delivery

📞 Viet SEO Contact Information:

• Website: https://vietseo.com/
• Hotline/Zalo: 0917 212 969

Conclusion

Correctly configuring DNS and thoroughly checking email send/receive functions not only make your business email more professional but also ensure that customers receive your messages at the right time, in the right way.

With over 15 years of experience in hosting, email, and SEO, Viet SEO is ready to support you in building a stable, secure, and effective email system.

Contact us now for free diagnostics and consultation – save time, optimize results!