---
name: "Sisimai::Reason::NotCompliantRFC"
section: "3pm"
platform: "linux"
package: "libsisimai-perl"
version: "5.3.0-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Sisimai::Reason::NotCompliantRFC"
---

# Sisimai::Reason::NotCompliantRFC(3pm)

Bounce reason is "notcompliantrfc" or not.

## NAME

Sisimai::Reason::NotCompliantRFC - Bounce reason is "notcompliantrfc" or not.

## SYNOPSIS

```
    use Sisimai::Reason::NotCompliantRFC;
    print Sisimai::Reason::NotCompliantRFC->match('This message is not RFC 5322 compliant.');   # 1
```

## DESCRIPTION

`"Sisimai::Reason::NotCompliantRFC"` checks the bounce reason is `"notcompliantrfc"` or not. This class is called only from `"Sisimai::Reason class"`.

This is the error that the email is not compliant RFC 5322 or other email related RFCs. For example, there are multiple `"Subject"` headers in the email.

```
    host aspmx.l.google.com[142.251.170.26] said: This message is not RFC 5322 compliant. There are
    multiple Subject headers. To reduce the amount of spam sent to Gmail, this message has been
    blocked. Please visit https://support.google.com/mail/?p=RfcMessageNonCompliant and review RFC
    5322 specifications for more information. - gsmtp (in reply to end of DATA command)",
```

## CLASS METHODS

### "text()"

`text()` method returns the fixed string `"notcompliantrfc"`.

```
    print Sisimai::Reason::NotCompliantRFC->text;  # notcompliantrfc
```

### "match(string)"

`match()` method returns `1` if the argument matched with patterns defined in this class.

```
    print Sisimai::Reason::NotCompliantRFC->match('This message is not RFC 5322 compliant');    # 1
```

### "true(Sisimai::Fact)"

`true()` method returns `1` if the bounce reason is `"notcompliantrfc"`. The argument must be `"Sisimai::Fact"` object and this method is called only from `"Sisimai::Reason"` class.

## AUTHOR

azumakuniyuki

## COPYRIGHT

Copyright (C) 2024-2025 azumakuniyuki, All rights reserved.

## LICENSE

This software is distributed under The BSD 2-Clause License.