Use sender in From if From and To domains match.

To deal with a recipient mail server not allowing inbound email
using the same domain as an internal domain, e.g.
https://community.mimecast.com/docs/DOC-1419

1 files changed, 12 insertions, 0 deletions

diff --git a/perllib/Utils/Email.pm b/perllib/Utils/Email.pm
index a30e41c61..5e3df0205 100644
--- a/perllib/Utils/Email.pm
+++ b/perllib/Utils/Email.pm
@@ -34,4 +34,16 @@ sub _send {
     return grep { $_->type eq $type } @answers;
 }
 
+sub same_domain {
+    my ($email, $list) = @_;
+    my $addr = (Email::Address->parse($email->[0]))[0];
+    return unless $addr;
+    my $domain = $addr->host;
+    foreach (@$list) {
+        my $addr = (Email::Address->parse($_->[0]))[0];
+        next unless $addr;
+        return 1 if $domain eq $addr->host;
+    }
+}
+
 1;