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Enable and recommend port 465 for mail submission instead of port 587 (fixes #1849)

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Port 465 with "implicit" (i.e. always-on) TLS is a more secure approach than port 587 with explicit (i.e. optional and only on with STARTTLS). Although we reject credentials on port 587 without STARTTLS, by that point credentials have already been sent.
This commit is contained in:
Joshua Tauberer
2021-05-09 10:11:40 -04:00
parent e283a12047
commit d510c8ae2a
11 changed files with 42 additions and 24 deletions
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3
tests/test_mail.py
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@@ -41,9 +41,8 @@ This is a test message. It should be automatically deleted by the test script.""
)
# Connect to the server on the SMTP submission TLS port.
server = smtplib.SMTP(host, 587)
server = smtplib.SMTP_SSL(host)
#server.set_debuglevel(1)
server.starttls()
# Verify that the EHLO name matches the server's reverse DNS.
ipaddr = socket.gethostbyname(host) # IPv4 only!