Sisima...ntError(3pm)

💖 Sisima...ntError(3pm) 💖

okay bestie so this is a page from the User Contributed Perl Documentation and it's literally about one tiny little class that has ONE job and does it flawlessly. no notes. 💅

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✨ NAME ✨

Sisimai::Reason::ContentError — is the bounce reason "contenterror" or not? that's it, that's the whole vibe check 🎀

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🌸 SYNOPSIS 🌸

use Sisimai::Reason::ContentError;
print Sisimai::Reason::ContentError->match('550 Message Filterd'); # 1

see how it just... returns 1? iconic behavior honestly 🔥

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🦋 DESCRIPTION 🦋

so Sisimai::Reason::ContentError is the little guy that checks whether a bounce reason is "contenterror" or not. lowkey a specialist. and here's the tea: this class only ever gets called by the Sisimai::Reason class, so like... don't try to summon it directly from your own code, it has a situationship with Sisimai::Reason and that's it 🙈

this is the error you get when the destination mail server has rejected an email because the header format of the email is giving chaos. like, the vibes of the headers? rancid. and sisimai will set "contenterror" as the reason for the bounce if the value of the "Status:" field in a bounce email is "5.6.*". no cap.

things that will get you a contenterror, bestie:

• 8 bit data in message header 😭
• Too many "Received:" headers
• Invalid MIME headers

and the server said, and I quote:

... while talking to g5.example.net.:
>>> DATA
<<< 550 5.6.9 improper use of 8-bit data in message header
554 5.0.0 Service unavailable

the >>> and <<< are the server and you going back and forth like it's an argument in the group chat. and you LOST. 💀

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👑 CLASS METHODS 👑

🫶 text()

text() method returns the fixed string "contenterror". it's not complicated. it's the same every single time. consistency queen. 🌈

print Sisimai::Reason::ContentError->text;  # contenterror

🫶 match(string)

match() method returns 1 if the argument matched with patterns defined in this class. yes bestie, we LOVE a boolean.

print Sisimai::Reason::ContentError->match('550 Message Filterd'); # 1

🫶 true(Sisimai::Fact)

true() method returns 1 if the bounce reason is "contenterror". but listen — the argument must be a Sisimai::Fact object, and this method is called only from the Sisimai::Reason class. so again: it's giving exclusive. invitation only. 🎀

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💜 AUTHOR 💜

azumakuniyuki — the main character who built this whole thing, we stan 🫡

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🍓 COPYRIGHT 🍓

Copyright (C) 2014-2016,2018,2021,2022,2024-2026 azumakuniyuki, All rights reserved.

that's a lot of years. dedication fr fr. ⭐

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🌸 LICENSE 🌸

This software is distributed under The BSD 2-Clause License. go forth and use it responsibly, bestie 💖

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that's the whole page!! this was perl v5.40.1, dated 2026-07-05, and it's page Sisima...ntError(3pm) 🦋 mwah, ily, go read a manpage 💅✨