A simple SMTP server (in Python)

Question

Could you please suggest a simple SMTP server with the very basic APIs (by very basic I mean, to read, write, delete email), that could be run on a linux box? I just need to

Answer 1

To get Hasen's script working in Python 3 I had to tweak it slightly:

from datetime import datetime
import asyncore
from smtpd import SMTPServer

class EmlServer(SMTPServer):
    no = 0
    def process_message(self, peer, mailfrom, rcpttos, data, **kwargs):
        filename = '%s-%d.eml' % (datetime.now().strftime('%Y%m%d%H%M%S'),
            self.no)
        print(filename)
        f = open(filename, 'wb')
        f.write(data)
        f.close
        print('%s saved.' % filename)
        self.no += 1

def run():
    EmlServer(('localhost', 25), None)
    try:
        asyncore.loop()
    except KeyboardInterrupt:
        pass

if __name__ == '__main__':
    run()