1 files changed, 3 insertions, 4 deletions
diff --git a/pullimap b/pullimap
index 18572e6..d176464 100755
--- a/pullimap
+++ b/pullimap
@@ -277,14 +277,13 @@ sub pull_callback($$) {
     my $uid = $mail->{UID};
     my $from = first { defined $_ and @$_ } @{$mail->{ENVELOPE}}[2,3,4];
     if (defined $from and @$from) {
-        my ($l, $d) = ($from->[0]->[2], $from->[0]->[3]);
-        if ($l !~ qr/\A$RE_ATOM(?:\.$RE_ATOM)*\z/o) { # Dot-string, RFC 5321
-            # quote the local part
-            $IMAP->panic("Invalid MAIL FROM: <$l\@$d>") unless $l =~ qr/\A[\x20-\x7E]*\z/;
+        my ($l, $d) = @{$from->[0]}[2,3];
+        unless ($l =~ /\A$RE_ATOM(?:\.$RE_ATOM)*\z/o) { # quote the local part if not Dot-string (RFC 5321)
             $l =~ s/([\x22\x5C])/\\$1/g; # escape double-quote and backslash
             $l = '"' .$l. '"';
         }
         $from = $l .'@'. $d;
+        $IMAP->fail("Invalid character in MAIL FROM: <$from>") unless $l =~ /\A[\x20-\x7E]*\z/;
     } else {
         $from = '';
     }