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What server does Sendmail use?
Sendmail is an application that includes SMTP functionality and configurations, but SMTP is the protocol used to send email messages. Cloud hosts offer a commercial application named Sendmail that can be used to send email via an application on a Windows or Linux server.
How do I change the relay host in sendmail?
Step C: Edit the sendmail.mc file
- With a text editor, open the sendmail.mc file.
- Locate the line that defines SMART_HOST .
- Uncomment this line by deleting the dnl at the beginning and end of the line.
- Change the following text to the hostname of the mail server that is performing the relay.
- Save and exit the file.
What is Relay Server in Sendmail?
What is mail relay? Mail relay is the process of transferring an email from one server to another for delivery. For example, if you work for Company A and send an email to someone at Company B, you connect to your company’s SMTP server which then relays your email to the server owned by Company B.
Is sendmail a mail server?
Sendmail is a general purpose internetwork email routing facility that supports many kinds of mail-transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet. …
How does an e-mail relay host with Sendmail work?
Mail from the internet to other internet recipients will not be forwarded, except for certain clearly defined domains. Mail from all hosts in the HSZ or DMZ will be sent to the relay host, which will deliver the email directly to the recipients in the internet using MX-records from the DNS Server.
How to set up SMTP relay with Sendmail-snel.com?
Edit /etc/mail/sendmail.mc and find the following line Rebuild the configuration file with the following command: Restart the mail server by issuing the following command: Congratulations, you have now installed SMTP relay / smarthost for your sendmail mail server.
How to set up a SMTP server with Sendmail?
If you want or need to set up your mail server to send all outgoing mail to a specific server that will handle the delivery to the recipients you can use this article to set up your SMTP relay / Smarthost with Sendmail. You must be logged in via SSH as sudo or root user. This tutorial assumes that you are logged in as a sudo user.
Why is relaying not allowed in sendmail 8.9?
Relaying (transmission of messages from a site outside your domain to another site outside your domain) is denied by default. Note that this changed in sendmail 8.9; previous versions allowed relaying by default. Relaying is a feature (not a bug) to prevent E-Mail spamming.