Which smtp server does sendmail use

Each of these protocols have optional methods to require client certificates or authentication. It's particularly important to protect an SMTP server from relaying email for unauthenticated users as it will typically be abused for spam purposes.

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Learn more. Is sendmail an smtp server? Is there any difference between MTA and mail server? Ask Question. Asked 6 years, 4 months ago. Active 4 years, 4 months ago. Viewed 15k times. I am new to mail and do not exactly know how it works.

Is there any difference between a mail transfer agent and a mail server? Improve this question. Noob Noob 1, 5 5 gold badges 19 19 silver badges 32 32 bronze badges. Add a comment. Active Oldest Votes. Improve this answer. Ajedi32 1, 2 2 gold badges 13 13 silver badges 34 34 bronze badges. Dan Cornilescu Dan Cornilescu 4 4 silver badges 9 9 bronze badges.

I looked into this a bit once. Community Bot 1. Note: A user defined in the aliases file is valid for all domains hosted by the system, unless you have configured virtual hosting.

For alternate configurations change the file: sendmail. The config file sendmail. Pre-configured ". Red Hat 7. The default configuration for Red Hat 7. Useful against DoS attacks or barrages of spam: Available with Sendmail version 8. Define rule in sendmail. Also see: Sendmail. See Sendmail. Create a free Team What is Teams?

Learn more. How to configure sendmail to use a different SMTP server? Ask Question. Asked 11 years ago. Active 11 years ago. Viewed 36k times. Improve this question. Are you able to telnet to port 25 on the target server from the sendmail host? Yes, "telnet I can get a Hello Oh, just noticed that the Hello I get back says the IP is Is that normal?

Use msmtp instead. Add a comment. Active Oldest Votes. Improve this answer. Tried to get in touch with the IT guy to figure out the hostname for that box. But in the meantime I tried embobo's fix and it worked. Thanks for the answer.