[geary/mjog/1079-mesage-id-from] Geary.Smtp.ClientService: Get default Message-Id header from From

[Michael Gratton <mjog src gnome org>]

commit 4c2011e0f2d6de0a9e2224fdd982bd9f2fdd3396
Author: Michael Gratton <mike vee net>
Date:   Wed Jan 27 23:51:35 2021 +1100

    Geary.Smtp.ClientService: Get default Message-Id header from From
    
    Use From header as the mesage id source, not Sender.
    
    Fixes #1079

 src/engine/smtp/smtp-client-service.vala | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/src/engine/smtp/smtp-client-service.vala b/src/engine/smtp/smtp-client-service.vala
index fa86226c8..49c09cfa1 100644
--- a/src/engine/smtp/smtp-client-service.vala
+++ b/src/engine/smtp/smtp-client-service.vala
@@ -121,9 +121,10 @@ public class Geary.Smtp.ClientService : Geary.ClientService {
         debug("Saving composed email: %s", email_subject(composed));
 
         // XXX work out what our public IP address is somehow and use
-        // that in preference to the sender's domain
-        string domain = composed.sender != null
-            ? composed.sender.domain
+        // that in preference to the originator's domain
+        var from = composed.from;
+        var domain = from != null && !from.is_empty
+            ? from[0].domain
             : this.account.primary_mailbox.domain;
         Geary.RFC822.Message rfc822 =
             yield new Geary.RFC822.Message.from_composed_email(