Compatibility with PostgreSQL (further fix)

dmarcreceiver/model.py

@@ -21,7 +21,7 @@ def init_model():
     metadata.bind = engine
     return DBSession
 
-Alignment = Enum('r', 's')
+Alignment = Enum('r', 's', name='alignment')
 Disposition = Enum('none', 'quarantine', 'reject', name='disposition')
 DMARCResult = Enum('pass', 'fail', name='dmarc_result')
 PolicyOverride = Enum('forwarded', 'sampled_out', 'trusted_forwarder', 'other', name='policy_override')