un-nest curl

curl-8.15.0/docs/cmdline-opts/mail-auth.md

@@ -0,0 +1,21 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Long: mail-auth
+Arg: <address>
+Protocols: SMTP
+Help: Originator address of the original email
+Added: 7.25.0
+Category: smtp
+Multi: single
+See-also:
+  - mail-rcpt
+  - mail-from
+Example:
+  - --mail-auth user@example.com -T mail smtp://example.com/
+---
+
+# `--mail-auth`
+
+Specify a single address. This is used to specify the authentication address
+(identity) of a submitted message that is being relayed to another server.