https://blog.cui.to/en/post/tag/email/ Samuel N Cui’s personal blog: technology, projects and life. en-US https://blog.cui.to/en/post/ubuntu-postfix-let-cpu-high/ https://blog.cui.to/en/post/ubuntu-postfix-let-cpu-high/ Wed, 24 Jul 2013 21:11:26 +0800 An investigation into high server load uncovers over ten thousand spam messages in the Postfix queue and missing SMTP authentication—a lesson in checking mail-server security settings. https://blog.cui.to/en/post/%E5%A6%82%E4%BD%95%E4%BD%BFz-push%E6%94%AF%E6%8C%81%E4%B8%AD%E6%96%87vcarddir/ https://blog.cui.to/en/post/%E5%A6%82%E4%BD%95%E4%BD%BFz-push%E6%94%AF%E6%8C%81%E4%B8%AD%E6%96%87vcarddir/ Mon, 22 Jul 2013 02:39:00 +0800 Troubleshooting garbled Chinese in Z-push’s VCardDir by bypassing an unnecessary character conversion. The separate problem of naming VCard files for entries added on a phone remains unresolved.