Thibault Delavallée e0207d1551 [IMP] tools, base, mail: better support non-ascii / IDNA when normalizing
PURPOSE

Be defensive when dealing with email fields, notably when having multi-emails
or email field containing an already-formatted email.

SPECIFICATIONS

As of rfc5322 section 3.4.1 local-part is case-sensitive. However most main
providers do consider the local-part as case insensitive. With the introduction
of smtp-utf8 within odoo, this assumption is certain to fall short for
international emails. We now consider that

  * if local part is ascii: normalize still 'lower' ;
  * else: use as it, SMTP-UF8 is made for non-ascii local parts;

Concerning domain part of the address, as of v14 international domain (IDNA)
are handled fine. The domain is always lowercase, lowering it is fine as it
is probably an error. With the introduction of IDNA, there is an encoding
that allow non-ascii characters to be encoded to ascii ones, using 'idna.encode'.

Also remove usage of 'email_re' in mailing email check. It is too restrictive
compared to real formatting we support (or try to). Valid outgoing emails
were directly canceled, notably when containing unicode.

Task-2612945 (Mail: Defensive email formatting)

X-original-commit: odoo/odoo@3ce5fb3072
Part-of: odoo/odoo#134934
2023-09-11 15:22:09 +00:00
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Odoo

Odoo is a suite of web based open source business apps.

The main Odoo Apps include an Open Source CRM, Website Builder, eCommerce, Warehouse Management, Project Management, Billing & Accounting, Point of Sale, Human Resources, Marketing, Manufacturing, ...

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For a standard installation please follow the Setup instructions from the documentation.

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