lib-smtp: client: Document the forced_capabilities setting.

diff --git a/src/lib-smtp/smtp-client.h b/src/lib-smtp/smtp-client.h
index bacb5ad73b21e39f34ccaaa67f132db5733df423..cefe24b19a82afa09ca5c20a889f52e037f625a9 100644 (file)
--- a/src/lib-smtp/smtp-client.h
+++ b/src/lib-smtp/smtp-client.h
@@ -42,6 +42,8 @@ struct smtp_client_settings {
        const char *my_hostname;
        const char *temp_path_prefix;
 
+       /* Capabilities that are assumed to be enabled no matter whether the
+          server indicates support. */
        enum smtp_capability forced_capabilities;
 
        struct dns_client *dns_client;