fix

frontend/src/pages/CampaignPage.js

@@ -144,13 +144,19 @@ function CampaignPage() {
     e.preventDefault();
     setEditLoading(true);
     try {
+      // Извлекаем smtp_server_id из массива SmtpServers
+      const campaignData = { ...editCampaign };
+      if (campaignData.SmtpServers && campaignData.SmtpServers.length > 0) {
+        campaignData.smtp_server_id = campaignData.SmtpServers[0].id;
+      }
+      
       const res = await fetch(`/api/mail/campaigns/${editCampaign.id}`, {
         method: 'PUT',
         headers: {
           'Content-Type': 'application/json',
           ...(token ? { Authorization: `Bearer ${token}` } : {})
         },
-        body: JSON.stringify(editCampaign)
+        body: JSON.stringify(campaignData)
       });
       if (!res.ok) {
         const data = await res.json();