Make some scalability corrections

2026-08-08 18:40:54 -05:00
parent 0213cf4918
commit 45d6c79f5a
2 changed files with 30 additions and 0 deletions
@@ -48,6 +48,7 @@ protocol lmtp {
 }

 protocol imap {
+  mail_max_userip_connections = 100
  mail_plugins {
    imap_quota = yes
  }
@@ -81,3 +82,17 @@ protocol submission {
  mail_max_userip_connections = 10
 }

+# --- Scalability & Memory Tuning (1 vCPU, 1GB RAM) ---
+# Safe limits to prevent OOM errors while accommodating concurrent connections
+default_process_limit = 150
+default_client_limit = 1000
+
+# --- Enhanced Diagnostic Logging ---
+# Provides detailed information about authentication and connection drops
+auth_verbose = yes
+auth_debug = yes
+mail_debug = yes
+
+# Delay failed authentication attempts by 2 seconds to slow brute force
+auth_failure_delay = 2 secs
+disable_plaintext_auth = yes