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If delivery failed due to a SMTPNotSupportedError exception, the exception handler in _deliver would try to invoke the decode() method on the class object, resulting in a cascading error. This commit fixes that problem.
Using mailproxy with Python 3.7+ results in the following error when s.starttls() is called: ValueError: server_hostname cannot be an empty string or start with a leading dot. The workaround for this problem is to pass the target host and port to the smtplib.SMTP() or smtplib.SMTP_SSL() constructors.
dancysoft
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Avoid a cascading error by catching and ignoring smtplib.SMTPServerDisconnected error when processing the 'finally' clause of MailProxyHandler._deliver().
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If delivery failed due to a SMTPNotSupportedError exception, the
exception handler in _deliver would try to invoke the decode() method
on the class object, resulting in a cascading error. This commit
fixes that problem.