[TristanPouliquen]

Summary

• GenericProviderClient takes an optional last constructor argument, int $connectTimeout, and passes it to SMTP::connect(). check() used to call connect($mxServer) with no timeout, so PHPMailer's default of 30 s applied.
• The default is GenericProviderClient::DEFAULT_CONNECT_TIMEOUT (30), which keeps today's behaviour, so this is a minor release (v2.12.0). A consumer whose MX servers are unreachable can now fail fast instead of waiting 30 s per server.
• The SMTP connection is now built by a protected createConnection() method, so a test can substitute a recording SMTP. That is what GenericProviderClientTest does to pin both the default and a configured timeout.

Test plan

• Fully covered by automated tests.

Shipping

Merging this PR ships nothing: it needs a semver tag / GitHub release (v2.12.0), then a
composer require assoconnect/php-smtp-toolbox:^2.12 bump PR in the consumer. Two reviews total.

🤖 Generated with Claude Code

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud