Expand email alias domain lists

Add fastmail.ca to the Fastmail domain set and myyahoo.com to the
Yahoo domain set, so more equivalent addresses normalize to the same
value before hashing. Both are confirmed to run on their provider's
own mail platform with no third-party migration history.

Author: faktas2

src/MinFraud/Util.php

@@ -127,6 +127,7 @@ class Util
         'fastemailer.com' => true,
         'fastest.cc' => true,
         'fastimap.com' => true,
+        'fastmail.ca' => true,
         'fastmail.cn' => true,
         'fastmail.co.uk' => true,
         'fastmail.com' => true,
@@ -223,6 +224,7 @@ class Util
      * @var array<string, bool>
      */
     private static $yahooDomains = [
+        'myyahoo.com' => true,
         'y7mail.com' => true,
         'yahoo.at' => true,
         'yahoo.be' => true,

tests/MaxMind/Test/MinFraud/UtilTest.php

@@ -188,6 +188,16 @@ public function testMaybeHashEmail(): void
                     ],
                 ],
             ],
+            [
+                'name' => 'Fastmail Canada alias domain',
+                'input' => ['email' => ['address' => 'alias@user.fastmail.ca']],
+                'expected' => [
+                    'email' => [
+                        'address' => md5('user@fastmail.ca'),
+                        'domain' => 'user.fastmail.ca',
+                    ],
+                ],
+            ],
             [
                 'name' => 'Domain with multiple host parts',
                 'input' => ['email' => ['address' => 'foo@bar.example.com']],
@@ -208,6 +218,16 @@ public function testMaybeHashEmail(): void
                     ],
                 ],
             ],
+            [
+                'name' => 'Alternate Yahoo signup domain',
+                'input' => ['email' => ['address' => 'test-alias@myyahoo.com']],
+                'expected' => [
+                    'email' => [
+                        'address' => md5('test@myyahoo.com'),
+                        'domain' => 'myyahoo.com',
+                    ],
+                ],
+            ],
             [
                 'name' => '.com.com',
                 'input' => ['email' => ['address' => 'foo@example.com.com']],