Otherwise, the local hostname is found using Local_hostname is used as the FQDN of the local host in the HELO/EHLOĬommand. Host and port parameters are given, the SMTP connect() method isĬalled with those parameters during initialization. That support a full repertoire of SMTP and ESMTP operations. SMTP ( host='', port=0, local_hostname=None, source_address=None ) ¶Īn SMTP instance encapsulates an SMTP connection. Protocol) and RFC 1869 (SMTP Service Extensions). Forĭetails of SMTP and ESMTP operation, consult RFC 821 (Simple Mail Transfer To send mail to any Internet machine with an SMTP or ESMTP listener daemon. The smtplib module defines an SMTP client session object that can be used