SMTP -> ERROR: Failed to connect to server: ()

[papatencia]

I’m getting this “SMTP -> ERROR: Failed to connect to server: ()” after the upgrade to Newsletter 3.4.7. I’m on WordPress 3.7.1.

In the Diagnostic panel, I can send the test email with WordPress, but sending the test email with Newsletter fails.

I’ve tried all the combinations between Sender name, Return path and Reply to, with no success.

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System parameters

Parameter Value
Database Wait Timeout 28800 (seconds)
PHP Execution Time 120 (seconds)
NEWSLETTER_MAX_EXECUTION_TIME Not set
NEWSLETTER_CRON_INTERVAL 300seconds
PHP Memory Limit 256M
WordPress Memory limit 64M
WP_DEBUG false
Absolute path […]
Tables Prefix wp_
Database Charset and Collate utf8
Hook “phpmailer_init” Obsolete. No actions attached
File permissions OK

———-

Semaphores

Name Active since
Newsletter delivery Not set

———-

Crons

Function Status
WordPress Cron System ENABLED. (it’s ok)
WordPress schedules jetpack_weekly – 604800 s
newsletter – 300 s
newsletter_weekly – 604800 s
hourly – 3600 s
twicedaily – 43200 s
daily – 86400 s
Delivery Engine Runs in 0 days, 0 hours, 2 minutes, 55 seconds

Thanks in advance for your help.

[Stefano]

Hi, is not a problem of Newsletter but your provider might have closed the connection to that SMTP server. Ask them about this issue. Or the SMTP might have closed the connection coming for your web server.

[Author]

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