doc: Update the default mail port (#97)

Signed-off-by: Martin Kletzander <[email protected]>

doc/pius.1

@@ -64,7 +64,7 @@ Do not use PGP/Mime when sending email.
 .IP "\fB\-p\fP, \fB\-\-cache\-passphrase\fP"
 Cache private key passphrase in memory and provide it to gpg instead of letting gpg prompt the user for every UID. [default: false]
 .IP "\fB\-P\fP \fIPORT\fP, \fB\-\-mail\-port=\fP\fIPORT\fP"
-\fIPort\fP of SMTP server. [default: 25]
+\fIPort\fP of SMTP server. [default: 587]
 .IP "\fB\-r\fP \fIKEYRING\fP, \fB\-\-keyring=\fP\fIKEYRING\fP"
 The keyring to use. Be sure to specify full or relative path. Just a filename will cause GPG to assume relative to \fI~/.gnupg\fP. [default: \fI~/.gnupg/pubring.gpg\fP]
 .IP "\fB\-s\fP \fISIGNER\-KEYID\fP, \fB\-\-signer=\fP\fISIGNER\-KEYID\fP"