Sisima...iltered(3pm)

💖 Sisimai::Reason::Filtered 💖

okay bestie, you found it — this is the Sisimai::Reason::Filtered page from the User Contributed Perl Documentation (yes, the 3pm section, we love a perl module moment 💅). Sit down, hydrate, and let's get into it.

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✨ NAME ✨

Sisimai::Reason::Filtered — it checks whether the bounce reason is "filtered" or not. that's the whole job. she's focused. she's employed. she's booked and busy 🎀

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🌸 SYNOPSIS 🌸

use Sisimai::Reason::Filtered;
print Sisimai::Reason::Filtered->match('550 5.1.2 User reject');   # 1

look at her go. one use, one print, one 1. absolutely ate 🔥

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🦋 DESCRIPTION 🦋

so, Sisimai::Reason::Filtered checks if the bounce reason is "filtered" or not, full stop.

ngl, this class is kinda exclusive — it's only called by the Sisimai::Reason class. no gatecrashers, no walk-ins, it's invitation only 💌

Here's the lore: this is the error you get when an email gets rejected by a header content check after the SMTP DATA command. Like, you did everything right, you said your data, and then… rejected. it's giving betrayal 😭

In Japanese cellular phones, this error pops up when the sender's email address or the domain gets rejected by the recipient's email configuration. rude, but okay 🫶

Sisimai will set "filtered" as the reason of the email bounce if the value of the Status: field in the bounce email is 5.2.0 or 5.2.1.

also this error reason is almost the same as "UserUnknown". siblings, basically. twins separated at birth fr fr 👯

... while talking to mfsmax.ntt.example.ne.jp.:
>>> DATA
<<< 550 Unknown user kijitora@ntt.example.ne.jp
554 5.0.0 Service unavailable

see? iconic behavior. the >>> and <<< sandwich, the 550 Unknown user, the 554 5.0.0. a whole mood 🌈

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👑 CLASS METHODS 👑

these are the three methods, bestie. all of them. no skips. 💖

🌟 text()

text() returns the fixed string "filtered". that's it. that's the method. she knows who she is and she's not changing for anybody.

print Sisimai::Reason::Filtered->text;  # filtered

🌟 match(string)

match() returns 1 if the argument matched with patterns defined in this class. match the vibe, get the 1.

print Sisimai::Reason::Filtered->match('550 5.1.2 User reject');   # 1

🌟 true(Sisimai::Fact)

true() returns 1 if the bounce reason is "filtered".

heads up bestie: the argument must be a Sisimai::Fact object, and this method is called only from the Sisimai::Reason class. no random objects, no strays, no exceptions. we're strict here 💅

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🎀 AUTHOR 🎀

azumakuniyuki — the icon, the legend, the moment. 💜

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🍓 COPYRIGHT 🍓

Copyright (C) 2014-2018,2020-2026 azumakuniyuki, All rights reserved.

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🧚 LICENSE 🧚

This software is distributed under The BSD 2-Clause License. go forth, use it, respect it, it's the law 📜✨

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and that's the whole page, bestie! no cap, you read it all. this was documented with perl v5.40.1 on 2026-07-05 — stay slay, stay filtered, and remember: Status: of 5.2.0 or 5.2.1 means we're calling it "filtered". periodt. 💖🦋🌸💅