An SPF record should always be terminated by a closing "all" or "redirect" mechanism

[Pascal76]

\SPFLib\OnlineSemanticValidator should raise an error or warning for such content:
v=spf1 ip4:185.132.182.57
from spf-0016fe01.pphosted.com (from nl-it.privalia.com)

[mlocati]

The RFC doesn't declare that an SPF record must be terminated with "all" or with "redirect".

Here's what it says:

If none of the mechanisms match and there is no "redirect" modifier,
then the check_host() returns a result of "neutral", just as if
"?all" were specified as the last directive.

[Pascal76]

That is the error I got here: https://dnschecker.org/spf-record-validation.php

[mlocati]

This library has been written by following the rules specified in RFC 7208; I don't think I'm not going to update the library to reflect what other services do, in particular if they don't follow the RFC,

[Pascal76]

maybe just a warning / notice (not an error) , saying the rule is not enforced ?