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Usr sbin sendmail No such file or directory Error

Setting up and configuring email services can be a difficult task, especially if we run into unexpected errors.

One such error occurs when testing Postfix using the mail user interface, resulting in the following message:

mail: /usr/sbin/sendmail: No such file or directory
Can’t send mail: sendmail process failed

Solution 1:

The Postfix package on Debian includes a compatibility interface at `/usr/sbin/sendmail`. To resolve this issue, follow these steps:

1. First, check if `/usr/sbin/sendmail` exists or if it has been renamed by using this command:

   ls -l /usr/sbin/sendmail*
2. In case `/usr/sbin/sendmail` is missing, we have to reinstall the postfix package to make sure the the wrapper is in place as seen here:

   sudo aptitude reinstall postfix
3. Alternatively, if `/usr/sbin/sendmail` is named `/usr/sbin/sendmail.postfix`, we have to create a symbolic link:

   ln -s /usr/sbin/sendmail.postfix /usr/sbin/sendmail

Solution 2:

In some cases, reversing the order of operations may result in errors. If there is no binary to link to, we have to reinstall the binary `/usr/sbin/postfix` from a backup or a fresh installation. Here is the command to create the necessary link:

ln -sf /usr/sbin/postfix /usr/sbin/mail

Troubleshooting Tips

If you are still running into the error, try these tips:

• Make sure both `mailutils` and `sendmail` are installed with these commands:

  sudo apt-get install mailutils
sudo apt-get install sendmail
• In order to send the contents of a file as an email, as seen here:

  cat /tmp/somefile.txt | mail -s "My subject" emailname@example.com`.
• Additionally, check the configuration file name. It should be `/etc/nail.rc` instead of `/etc/mail.rc`. Renaming it to `/etc/nail.rc` should resolve the problem.

Let us know in the comments which of the above tips helped fix the error.

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Conclusion

In brief, our Support Experts demonstrated how to fix the usr sbin sendmail No such file or directory error.