1--- 2c: Copyright (C) Daniel Stenberg, <[email protected]>, et al. 3SPDX-License-Identifier: curl 4Long: mail-auth 5Arg: <address> 6Protocols: SMTP 7Help: Originator address of the original email 8Added: 7.25.0 9Category: smtp 10Multi: single 11See-also: 12 - mail-rcpt 13 - mail-from 14Example: 15 - --mail-auth [email protected] -T mail smtp://example.com/ 16--- 17 18# `--mail-auth` 19 20Specify a single address. This is used to specify the authentication address 21(identity) of a submitted message that is being relayed to another server. 22