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SMTP support for TLS over port 465 is needed #3897

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MrTango opened this issue Feb 8, 2024 · 3 comments
Open

SMTP support for TLS over port 465 is needed #3897

MrTango opened this issue Feb 8, 2024 · 3 comments

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@MrTango
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MrTango commented Feb 8, 2024

Plone right now only supports TLS via STARTTLS over port 587, but this is deprecated and some email providers like AWS don't support it anymore. We should now support TLS/SSL over port 465, which is the preferred way see https://www.rfc-editor.org/rfc/rfc8314.
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MrTango commented Feb 8, 2024

see also zopefoundation/zope.sendmail#53

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MrTango commented Feb 8, 2024

I think it should be solved in zope, but we could also change the smtp Class property to point to SMTP_SSL after importing it.

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MrTango commented Feb 9, 2024

as a workaround i published a small package which patches the mailer to use port 465: https://pypi.org/project/collective.smtpssl/

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