Hello @morvy ,
We hope this message finds you well.
Thank you for reaching out to our Support team. We’re truly sorry to hear that you’ve encountered this issue.
To effectively assist you, could you please share the Diagnostic Test Report from Post SMTP Dashboard.
I await your response & an opportunity to assist you.
Warm regards,
Support Team – WP Experts
Thread Starter
morvy
(@morvy)
Mailer: phpmailer
HostName: XXX
cURL Version: 8.14.1
OpenSSL Version: OpenSSL/1.1.1w
OS: Linux 4.18.0-553.77.1.lve.el8.x86_64 #1 SMP Wed Oct 8 14:21:00 UTC 2025 x86_64
PHP: Linux 8.2.29 C.UTF-8
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=No, zlib_encode=Yes
WordPress: 6.8.3 sk_SK UTF-8
WordPress Theme: Blocksy
WordPress Plugins: WPCodeBox 2, Blocksy Companion (Premium), Advanced Custom Fields PRO, GTM4WP - A Google Tag Manager (GTM) plugin for WordPress, LiteSpeed Cache, Post SMTP, Sequential Order Numbers for WooCommerce, WooCommerce, Wordfence Security, SEOPress PRO, SEOPress, WPS Hide Login
WordPress wp_mail Owner: /var/www/html/wp-includes/pluggable.php
WordPress wp_mail Filter(s): PostsmtpMailer->get_mail_args
WordPress wp_mail_from Filter(s): wordfence::fixWPMailFromAddress
WordPress phpmailer_init Action(s): PostsmtpMailer->phpmailer_smtp_init
Postman: 3.6.1
Postman Sender Domain (Envelope|Message): XXX | XXX
Postman Prevent Message Sender Override (Email|Name): Yes | Yes
Postman Active Transport: Other SMTP (smtp:tls:login://XXX:587)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 72440 | 241
Postman Email Log (Enabled|Limit|Transcript Size): Yes | 500 | 128
Postman Run Mode: log_only
Postman Stealth Mode: Yes
Hey support team,
same problem here:
Mailer: postsmtp
HostName: test.mydomain.net
cURL Version: 7.88.1
OpenSSL Version: OpenSSL/3.0.14
OS: Linux 172550c285ef 5.15.0-105-generic #115-Ubuntu SMP Mon Apr 15 09:52:04 UTC 2024 x86_64
PHP: Linux 8.1.29 C.UTF-8
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=No, allow_url_fopen=Yes, mcrypt=No, zlib_encode=Yes
WordPress: Multisite 6.8.3 de_DE UTF-8
WordPress Theme: waac
WordPress Plugins:
WordPress wp_mail Owner: /var/www/html/content/plugins/post-smtp/Postman/PostmanWpMailBinder.php
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email, PostsmtpMailer->get_mail_args, Haet_Mail->style_mail, CQ\WAAC\general\Environment->redirect_emails
WordPress phpmailer_init Action(s): fix_phpmailer_messageid
Postman: 3.6.1
Postman Sender Domain (Envelope|Message): mydomain.net | mydomain.net
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: Mailgun API (https://api.eu.mailgun.net:443)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 1456 | 0
Postman Email Log (Enabled|Limit|Transcript Size): Yes | 1000 | 128
Hello @morvy ,
Thank you for providing the requested information. I’ve forwarded the details to our technical team for further analysis. I will get back to you as soon as I receive their response or if we require any additional information from your end.
We truly appreciate your patience and cooperation throughout this process. If you have any questions or concerns in the meantime, please don’t hesitate to reach out.
Warm regards,
Support Team – WP Experts
The resolution to this issue could be found on this thread.
@haet
