'int','is_active' => 'boolean']; public function domain(): BelongsTo { return $this->belongsTo(Domain::class); } public function renderTxt(): string { $parts = ['v=DMARC1', "p={$this->policy}", "pct={$this->pct}"]; if ($this->rua) $parts[] = "rua={$this->rua}"; if ($this->ruf) $parts[] = "ruf={$this->ruf}"; return implode('; ', $parts); } }