{"record":{"id":"dbb5dc629129792a","repo":"Billionmail/BillionMail","slug":"failed-to-update-postfix-configurations-v","errorCode":null,"errorMessage":"failed to update Postfix configurations: %v","messagePattern":"failed to update Postfix configurations: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"core/internal/service/multi_ip_domain/config_manager.go","lineNumber":149,"sourceCode":"\tfor _, backup := range backups {\n\t\tif gfile.Exists(backup) {\n\t\t\tg.Log().Debugf(ctx, \"Cleaning up backup file: %s\", backup)\n\t\t\t_ = os.Remove(backup)\n\t\t}\n\t}\n}\n\n// applyConfigs Apply configurations\nfunc (m *ConfigManager) applyConfigs(ctx context.Context, configs []map[string]interface{}) error {\n\t// 1. Update docker-compose.yml\n\tif err := m.updateDockerCompose(ctx, configs); err != nil {\n\n\t\treturn fmt.Errorf(\"failed to update docker-compose.yml: %v\", err)\n\t}\n\n\t// 2. Update Postfix configurations\n\tif err := m.updatePostfixConfigs(ctx, configs); err != nil {\n\t\treturn fmt.Errorf(\"failed to update Postfix configurations: %v\", err)\n\t}\n\n\treturn nil\n}\n\n// updateDockerCompose Generate docker-compose_addnetwork.yml\nfunc (m *ConfigManager) updateDockerCompose(ctx context.Context, configs []map[string]interface{}) error {\n\toriginalPath := filepath.Join(public.HostWorkDir, \"docker-compose.yml\")\n\toutputPath := filepath.Join(public.HostWorkDir, \"docker-compose_addnetwork.yml\")\n\n\t// 设置临时文件路径\n\t// 容器内路径：/opt/billionmail/core/data (通过 public.AbsPath 获取)\n\t// 宿主机路径：./core-data (相对于 docker-compose.yml 所在目录)\n\tcontainerDataPath := public.AbsPath(\"../core/data/\")\n\thostDataPath := filepath.Join(public.HostWorkDir, \"core-data\") // 宿主机的实际映射路径\n\ttempDockerComposePath := filepath.Join(containerDataPath, \"temp_docker-compose.yml\")\n\thostTempDockerComposePath := filepath.Join(hostDataPath, \"temp_docker-compose.yml\")\n","sourceCodeStart":131,"sourceCodeEnd":167,"githubUrl":"https://github.com/Billionmail/BillionMail/blob/fc36c76c050c3775c5e899faf7403cf0262d2744/core/internal/service/multi_ip_domain/config_manager.go#L131-L167","documentation":"applyConfigs step 2: regenerate Postfix main.cf/master.cf multi-ip entries via updatePostfixConfigs. On failure the error is wrapped with this prefix; ApplyConfigsWithRollback then rolls back from the backups created earlier. This is a wrapper — diagnose the inner updatePostfixConfigs error.","triggerScenarios":"updatePostfixConfigs returns an error: template render failure, master.cf/main.cf write failure, or invalid entries derived from the configs slice (missing IP/bad hostname format).","commonSituations":"Config payload contains an invalid IP or duplicate service entry that fails to render into master.cf; conf/postfix files made read-only; concurrent external edit invalidating the marker-block structure.","solutions":["Unwrap the inner error to find the exact failing write or parse step.","Validate each entry in configs (IP format via net.ParseIP, unique hostname/IP) before calling ApplyConfigsWithRollback.","Restore conf/postfix from the .backup.<nano> files if rollback did not succeed, then fix inputs and retry.","Check conf/postfix file permissions and that the marker blocks (# BEGIN/END BILLIONMAIL multi-ip services) are intact."],"exampleFix":"// before\nfor _, c := range configs {\n    ip := gconv.String(c[\"ip\"])\n    _ = ip\n}\n// after\nfor _, c := range configs {\n    ip := gconv.String(c[\"ip\"])\n    if net.ParseIP(ip) == nil {\n        return fmt.Errorf(\"invalid IP in config: %q\", ip)\n    }\n}","handlingStrategy":"validation","validationCode":"for _, c := range configs {\n\tip, _ := c[\"ip\"].(string)\n\tif net.ParseIP(ip) == nil {\n\t\treturn fmt.Errorf(\"invalid ip in config: %q\", ip)\n\t}\n}\nfor _, f := range []string{multi_ip_domain.PostfixMainCfPath, multi_ip_domain.PostfixMasterCfPath} {\n\tif _, err := os.Stat(f); err != nil {\n\t\treturn fmt.Errorf(\"postfix config missing: %v\", err)\n\t}\n}","typeGuard":null,"tryCatchPattern":"if err := mgr.ApplyConfigsWithRollback(ctx, configs); err != nil {\n\tif strings.Contains(err.Error(), \"failed to update Postfix configurations\") {\n\t\t// rollback already ran; validate postfix configs and fix inputs before retry\n\t}\n}","preventionTips":["Validate IPs/hostnames in configs before applying.","Keep the BILLIONMAIL marker blocks in master.cf intact.","Avoid concurrent manual edits to main.cf/master.cf.","Run postfix check after applies."],"tags":["postfix","config-apply","wrapper","go"],"backgroundTag":"postfix-config-update-failed","analyzedSha":"fc36c76c050c3775c5e899faf7403cf0262d2744","analyzedAt":"2026-09-05T21:28:54.019Z","contentChangedAt":"2026-09-05T21:28:54.019Z","schemaVersion":2},"datasetVersion":"2026-09-12T22:17:10.623Z"}