Title: Server Error 503 when processing Emails
Last modified: December 31, 2025

---

# Server Error 503 when processing Emails

 *  [scolex](https://wordpress.org/support/users/scolex/)
 * (@scolex)
 * [4 months, 4 weeks ago](https://wordpress.org/support/topic/server-error-503-when-processing-emails/)
 * Hi there,
 * my issue is that Postie doesn’t synchronise the mails anymore, it was working
   well three months ago, but now the mails aren’t posted any more.
   When I’m processing
   emails via the button in the settings I get an Server Error 503, also when I 
   use the Debug button.When using test configuration everything seems fine and 
   the available four emails inthe mail inbox are recognised, but not delivered.
 * This is what I get by testing configuration:
 * `Connect to Mail Host 
   Postie connection: socketsPostie protocol: pop3-sslPostie
   server: web9.alfahosting-server.dePostie port: 995 Successful POP3-SSL connection
   on port 995 # of waiting messages: 4
 * Hoster support says it’s a problem with the plugin, due to there are no limits
   by server ressources when using it. So what can I do?
 * Best regards
 * ![](https://i0.wp.com/www.frei-medien.de/Screenshot%202025-12-31%20094238.jpg?
   ssl=1)
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fserver-error-503-when-processing-emails%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

You must be [logged in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fserver-error-503-when-processing-emails%2F%3Foutput_format%3Dmd&locale=en_US)
to reply to this topic.

 * ![](https://ps.w.org/postie/assets/icon-256x256.png?rev=970083)
 * [Postie](https://wordpress.org/plugins/postie/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/postie/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/postie/)
 * [Active Topics](https://wordpress.org/support/plugin/postie/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/postie/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/postie/reviews/)

 * 0 replies
 * 1 participant
 * Last reply from: [scolex](https://wordpress.org/support/users/scolex/)
 * Last activity: [4 months, 4 weeks ago](https://wordpress.org/support/topic/server-error-503-when-processing-emails/)
 * Status: not resolved