Download the Source

The latest release of sendmail is available via:

http://www.sendmail.org/

When you download the source you must select a file appropriate to your needs from the many that are listed. In addition to selecting the version of sendmail you want, you must choose between two forms of compressed tar(1) distributions. Those that end in .Z are compressed with Unix compress(1); those that end in .gz are compressed with GNU gzip(1). The latter is the preferred form because the file is smaller and therefore quicker to transfer.

In addition to the two forms of distribution, each release has a PGP signature file associated with it.[27] Prior to V8.11, this was a single signature file used to verify the uncompressed file, meaning that you needed to uncompress the tar(1) file before verifying it. Beginning with V8.11, there is a signature file for each of the compressed files, so there is no need to uncompress either first.

The signature file has the same name as the distribution file but with a literal .sig suffix added.

sendmail.8.14.1.tar.gzthe distribution file
sendmail.8.14.1.tar.gz.sig      ← the signature file for this distribution file
sendmail.8.14.1.tar.Zthe distribution file
sendmail.8.14.1.tar.Z.sig       ← the signature file for this distribution file

If you have not already done so for an earlier sendmail distribution, you must now download and install the PGPKEYS file from sendmail.org:

ftp://ftp.sendmail.org/pub/sendmail/PGPKEYS

After downloading this file, add the keys in ...

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