#34961: Add a max_length parameter to EmailValidator
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Reporter: jecarr | Owner: nobody
Type: | Status: closed
Cleanup/optimization |
Component: Core (Other) | Version: 4.2
Severity: Normal | Resolution: wontfix
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Mariusz Felisiak):
Replying to [comment:6 Natalia Bidart]:
> Mariusz, I checked the RFC5321 and as per my reading, the recommendation
is: for the local part of the email address (before the `@` symbol), no
more than 64 characters long. For the domain part, no more than 255
characters. That adds up to 319 plus the `@` sign, so 320chars as you
already added to the `EmailValidator`. Where is it that the max length was
changed to 254?
Yes, but a total size limit is defined in [https://www.rfc-
editor.org/rfc/rfc5321#section-4.5.3.1.3 4.5.3.1.3]:
> ''The maximum total length of a reverse-path or forward-path is 256
octets (including the punctuation and element separators).''
RFC 3696 was corrected [https://www.rfc-
editor.org/errata_search.php?rfc=3696 here].
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Ticket URL: <https://code.djangoproject.com/ticket/34961#comment:7>
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