>>> interface=ip4.ip4.ip4.ip4 port=1224
>>> Connecting to 127.0.0.1 [127.0.0.1]:1224 from ip4.ip4.ip4.ip4 ... connected
>>> SMTP<< 220 server ready
>>> 127.0.0.1 in hosts_avoid_esmtp? no (option unset)
>>> SMTP>> EHLO myhost.test.ex
>>> interface=ip4.ip4.ip4.ip4 port=1224
>>> Connecting to 127.0.0.1 [127.0.0.1]:1224 from ip4.ip4.ip4.ip4 ... connected
>>> SMTP<< 220 server ready
>>> 127.0.0.1 in hosts_avoid_esmtp? no (option unset)
>>> SMTP>> EHLO myhost.test.ex