Title: microscan5ep's Replies | WordPress.org --- # microscan5ep [ ](https://wordpress.org/support/users/microscan5ep/) * [Profile](https://wordpress.org/support/users/microscan5ep/) * [Topics Started](https://wordpress.org/support/users/microscan5ep/topics/) * [Replies Created](https://wordpress.org/support/users/microscan5ep/replies/) * [Reviews Written](https://wordpress.org/support/users/microscan5ep/reviews/) * [Topics Replied To](https://wordpress.org/support/users/microscan5ep/replied-to/) * [Engagements](https://wordpress.org/support/users/microscan5ep/engagements/) * [Favorites](https://wordpress.org/support/users/microscan5ep/favorites/) Search replies: ## Forum Replies Created Viewing 8 replies - 1 through 8 (of 8 total) * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[atec Cache Info] Another ‘object-cache.php’ file exists](https://wordpress.org/support/topic/another-object-cache-php-file-exists/) * Thread Starter [microscan5ep](https://wordpress.org/support/users/microscan5ep/) * (@microscan5ep) * [4 weeks ago](https://wordpress.org/support/topic/another-object-cache-php-file-exists/#post-18963139) * I guess I expected the error message not to display if there was no error! * Thank you * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[atec Cache Info] Another ‘object-cache.php’ file exists](https://wordpress.org/support/topic/another-object-cache-php-file-exists/) * Thread Starter [microscan5ep](https://wordpress.org/support/users/microscan5ep/) * (@microscan5ep) * [4 weeks, 1 day ago](https://wordpress.org/support/topic/another-object-cache-php-file-exists/#post-18962926) * CLI means “Command Line Interpreter” in other words, when I SSH into the server. * As I said there is no such file in the wp-content directory yet the message remains. * If I install your “atec Cache APCu” plugin that file then does appear, but the message still says: * “atec Cache APCu: Another ‘object-cache.php’ file exists. Please deactivate it first.” * So it doesn’t seem to recognise it’s own file * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[WP Mail SMTP by WPForms - The Most Popular SMTP and Email Log Plugin] Unable to turn authentication off](https://wordpress.org/support/topic/unable-to-turn-authentication-off/) * Thread Starter [microscan5ep](https://wordpress.org/support/users/microscan5ep/) * (@microscan5ep) * [6 months, 4 weeks ago](https://wordpress.org/support/topic/unable-to-turn-authentication-off/#post-18782880) * Any thoughts on this? * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[WP Mail SMTP by WPForms - The Most Popular SMTP and Email Log Plugin] Unable to turn authentication off](https://wordpress.org/support/topic/unable-to-turn-authentication-off/) * Thread Starter [microscan5ep](https://wordpress.org/support/users/microscan5ep/) * (@microscan5ep) * [7 months, 1 week ago](https://wordpress.org/support/topic/unable-to-turn-authentication-off/#post-18773148) * Apologies for the late reply – I did not receive a notification that anyone had replied and I hadn’t been checking over the holiday period. * So I deleted the plugin again, then re-installed it from scratch again, it failed the setup test with the same error (authentication failed). I then turned debugging on and sent a test email, which failed again with the same error, below is the debug output (with hostnames redacted) followed by a screenshot of the SMTP settings where you can see that authentication is definitely switched off. * So why is the plugin still trying to authenticate? FYI the SMTP server doesn’t need authentication as it has the senders IP address whitelisted. * ```wp-block-code Versions:WordPress: 6.9WordPress MS: NoPHP: 8.4.16WP Mail SMTP: 4.7.1Params:Mailer: smtpConstants: NoErrorInfo: SMTP Error: Could not authenticate.Host: smtp.xxxxx.netPort: 587SMTPSecure: tlsSMTPAutoTLS: bool(true)SMTPAuth: bool(true)Server:OpenSSL: OpenSSL 3.5.4 30 Sep 2025Debug:Email Source: WP Mail SMTP Mailer: Other SMTP SMTP Error: Could not authenticate.SMTP Debug:2026-01-02 20:14:06 Connection: opening to smtp.xxxxx.net:587, timeout=30, options=array()2026-01-02 20:14:06 Connection: opened2026-01-02 20:14:07 SERVER -> CLIENT: 220 smtp.xxxxx.net ESMTP2026-01-02 20:14:07 CLIENT -> SERVER: EHLO www.yyyyy.co.uk2026-01-02 20:14:07 SERVER -> CLIENT: 250-smtp.xxxxx.net250-PIPELINING250-SIZE 52428800250-ETRN250-STARTTLS250-AUTH PLAIN LOGIN250-AUTH=PLAIN LOGIN250-ENHANCEDSTATUSCODES250-8BITMIME250-DSN250-SMTPUTF8250 CHUNKING2026-01-02 20:14:07 CLIENT -> SERVER: STARTTLS2026-01-02 20:14:07 SERVER -> CLIENT: 220 2.0.0 Ready to start TLS2026-01-02 20:14:07 CLIENT -> SERVER: EHLO www.yyyyy.co.uk2026-01-02 20:14:07 SERVER -> CLIENT: 250-smtp.xxxxx.net250-PIPELINING250-SIZE 52428800250-ETRN250-AUTH PLAIN LOGIN250-AUTH=PLAIN LOGIN250-ENHANCEDSTATUSCODES250-8BITMIME250-DSN250-SMTPUTF8250 CHUNKING2026-01-02 20:14:07 CLIENT -> SERVER: AUTH LOGIN2026-01-02 20:14:07 SERVER -> CLIENT: 334 VXNlcm5hbWU62026-01-02 20:14:07 CLIENT -> SERVER: [credentials hidden]2026-01-02 20:14:09 SERVER -> CLIENT: 535 5.7.8 Error: authentication failed: (reason unavailable)2026-01-02 20:14:09 SMTP ERROR: Username command failed: 535 5.7.8 Error: authentication failed: (reason unavailable)SMTP Error: Could not authenticate.2026-01-02 20:14:09 CLIENT -> SERVER: QUIT2026-01-02 20:14:09 SERVER -> CLIENT: 221 2.0.0 Bye2026-01-02 20:14:09 Connection: closedSMTP Error: Could not authenticate. ``` * ![](https://i0.wp.com/smsgw.uk/Debug.png?ssl=1) * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[WP Mail SMTP by WPForms - The Most Popular SMTP and Email Log Plugin] Unable to turn authentication off](https://wordpress.org/support/topic/unable-to-turn-authentication-off/) * Thread Starter [microscan5ep](https://wordpress.org/support/users/microscan5ep/) * (@microscan5ep) * [7 months, 3 weeks ago](https://wordpress.org/support/topic/unable-to-turn-authentication-off/#post-18756987) * Thanks for your reply, but as I stated in my first post authentication *is* turned off. That is why I am asking for help, because even though authentication is turned off, the plugin is attempting to authenticate!! I guess it must be a bug. * FYI, I have tried uninstalling the plugin after first turning on the option to delete all setting on deactivation, then re-installing – same result. * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[WP Mail SMTP by WPForms - The Most Popular SMTP and Email Log Plugin] Unable to turn authentication off](https://wordpress.org/support/topic/unable-to-turn-authentication-off/) * Thread Starter [microscan5ep](https://wordpress.org/support/users/microscan5ep/) * (@microscan5ep) * [8 months, 1 week ago](https://wordpress.org/support/topic/unable-to-turn-authentication-off/#post-18737892) * Hello, * Thanks for the reply. * The SMTP server is ours and although it can accept authentication, it does not require it from IPs that are on it’s whitelist, which the web server hosting this site is on. The plugin appears to be attempting to authenticate even though I turned off authentication. * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[Wordfence Security - Firewall, Malware Scan, and Login Security] Inappropriate password rules](https://wordpress.org/support/topic/inappropriate-password-rules/) * Thread Starter [microscan5ep](https://wordpress.org/support/users/microscan5ep/) * (@microscan5ep) * [3 years ago](https://wordpress.org/support/topic/inappropriate-password-rules/#post-16960625) * Thanks for the reply Peter. Maybe you could have the current password checks on by default, but provide an advanced setting where they can be turned off individually? * Absolutely agree with your comment re. 2FA, although I’m not a big fan of reCAPTCHA personally. * Regards * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[Kadence Security – Password, Two Factor Authentication, and Brute Force Protection] reCaptcha appearing on non-pro version](https://wordpress.org/support/topic/recaptcha-appearing-on-non-pro-version/) * Thread Starter [microscan5ep](https://wordpress.org/support/users/microscan5ep/) * (@microscan5ep) * [7 years, 7 months ago](https://wordpress.org/support/topic/recaptcha-appearing-on-non-pro-version/#post-11065157) * Yep, that was the culprit! * Thanks, Chris Viewing 8 replies - 1 through 8 (of 8 total)