POST SMTP on port 587 stopped working for no reason

Hi @mmotlaw,

I hope you are doing well.

Have you test it by changing the port to 465 or 25? Can you please test that and let us know. Waiting for your response.

Thanks and Regards,
Support Team-WP Experts.

Hi, thanks for the reply. Ovh email pro only supports port 587. I tested it with different different email service from ovh, which works on port 465, connection also was refused

Hello,

I just received a notification that the same error occured on a different website. The second site also uses ovh pro email and hosting, but the plugins installed are different. This time error “PostmanSendTestEmailAjaxController” also appears in the logs. Here’s diagnostics screenshot: https://imgur.com/a/2AYs4h1 . Soon every website I manage will collapse if this error persists. To me it looks like the wordpress engine or some plugin is blocking 587 port for some unknown reason. Any help appreciated. Log below:

Mailer: postsmtp
HostName: bebetko.pl
cURL Version: 7.64.0
OpenSSL Version: OpenSSL/1.1.1n
OS: Linux webm061.cluster027.gra.hosting.ovh.net 5.15.80-ovh-vps-grsec-zfs-classid #1 SMP Wed Nov 30 08:49:06 UTC 2022 x86_64
PHP: Linux 8.1.22 C.UTF-8
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=No, zlib_encode=Yes
WordPress: 6.3.1 pl_PL UTF-8
WordPress Theme: Hello Elementor Child
WordPress Plugins: Complianz | GDPR/CCPA Cookie Consent, Reduce Unused CSS Solution with Critical CSS For WP, Elementor Pro, Elementor, ElementsKit Lite, Essential Addons for Elementor, Site Kit by Google, Elementor Header & Footer Builder, Pay by paynow.pl, Post SMTP, ShopMagic for WooCommerce, SVG Support, TI WooCommerce Wishlist, UpdraftPlus – Backup/Restore, W3 Total Cache, WebP Express, Product Filter by WBW, PDF Invoices & Packing Slips for WooCommerce, WooCommerce, Yoast SEO, WPForms Lite
WordPress wp_mail Owner: /home/bebetkb/www/wp-content/plugins/post-smtp/Postman/PostmanWpMailBinder.php
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email, WPO\WC\PDF_Invoices\Main->set_phpmailer_validator, PostsmtpMailer->get_mail_args
WordPress phpmailer_init Action(s): PostsmtpMailer->phpmailer_smtp_init
Postman: 2.5.9.1
Postman Sender Domain (Envelope|Message): bebetko.pl | bebetko.pl
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: SMTP (smtps:login://pro3.mail.ovh.net:25)
Postman Active Transport Status (Ready|Connected): Yes | No
Postman Deliveries (Success|Fail): 37 | 1

I can now confirm that this issue is not caused by email provider. Especially for this purpose I bought another domain and email at different hosting provider – home.pl . POSTMan gives the same connection refused error, while nodemailer test works fine. Please help.

Update – on the first site I have turned off every single plugin except for POSTMan – still the same – connection time out. Screenshot: https://imgur.com/a/IDR9oNI . I’m running out of ideas. Here’s debug log:

Mailer: postsmtp
HostName: mw-aqua.pl
cURL Version: 7.64.0
OpenSSL Version: OpenSSL/1.1.1n
OS: Linux webm314.cluster028.gra.hosting.ovh.net 5.15.80-ovh-vps-grsec-zfs-classid #1 SMP Wed Nov 30 08:49:06 UTC 2022 x86_64
PHP: Linux 8.0.30 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=No, zlib_encode=Yes
WordPress: 6.3.1 pl_PL UTF-8
WordPress Theme: Hello Elementor
WordPress Plugins: Post SMTP
WordPress wp_mail Owner: /home/mwaquaf/www/wp-content/plugins/post-smtp/Postman/PostmanWpMailBinder.php
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email, PostsmtpMailer->get_mail_args
WordPress phpmailer_init Action(s): PostsmtpMailer->phpmailer_smtp_init
Postman: 2.6.0
Postman Sender Domain (Envelope|Message): mw-aqua.pl | mw-aqua.pl
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: SMTP (smtp:tls:login://pro3.mail.ovh.net:587)
Postman Active Transport Status (Ready|Connected): Yes | No
Postman Deliveries (Success|Fail): 298 | 35
Postman Email Log (Enabled|Limit|Transcript Size): Yes | 500 | 128

• This reply was modified 1 year, 2 months ago by mmotlaw.

Tried downgrading to WordPress 6.2 – still the same, irregardless of mail provider or port or ssl/tls. Help

Hi @mmotlaw,

I hope you are doing well.

Could you please reach out to us through our?Extension support?here? This way, our team can gather further information about the problem and provide you with appropriate guidance and potential solutions.

Thanks and Regards,

Support Team-WP Experts.

Hello,

Thanks for your reply. It turns out that it was a server cluster malfunction at ovh end. It took them 26 hours to fix… here’s link to their status page: https://web-cloud.status-ovhcloud.com/incidents/l120b27ql8zj . Anyway, it’s resolved and it’s not your plugin’s fault – it still works amazing. Keep it on, cheers from Poland.

Maciej

Hi @mmotlaw,

I hope you are doing well.

Thanks for updating us. Glad to hear that your issue has been resolved. We would appreciate a kind and honest review on our Post SMTP profile.

Thanks and Regards,
Support Team-WP Experts.