当用户注册时，我会发送确认邮件（及其他邮件）。问题在于，当我发送到非gmail、hotmail或任何大型电子邮件服务的地址时，邮件头中会出现错误。
{
"severity": "permanent",
"tags": [],
"delivery-status": {
"tls": false,
"mx-host": "mxer.customdomain.com",
"code": 553,
"description": null,
"session-seconds": 6.566637992858887,
"message": "553 5.1.8 <user@customdomain.com>... Domain of sender address bounce+e06614.0f9698-user=customdomain.com@mg.mydomain.com does not exist",
"certificate-verified": false
},
"envelope": {
"transport": "smtp",
"sender": "accounts@mydomain.com",
"sending-ip": "123.45.678.900",
"targets": "user@customdomain.com"
},
"recipient-domain": "customdomain.com",
"id": "AbCDeFGhiJk_lMn",
"campaigns": [],
"reason": "generic",
"user-variables": {},
"flags": {
"is-routed": null,
"is-authenticated": true,
"is-system-test": false,
"is-test-mode": false
},
"log-level": "error",
"timestamp": 1456123374.411238,
"message": {
"headers": {
"to": "First Last <user@customdomain.com>",
"message-id": "56caade72ed26_***********9@6e5120c5-0d27-4491-a430-1a2dc4e6b862.mail",
"from": "Team Accounts <accounts@mydomain.com>",
"subject": "Confirmation instructions"
},
"attachments": [],
"recipients": [
"user@customdomain.com"
],
"size": 1143
},
"recipient": "user@customdomain.com",
"event": "failed"
}
我设置邮件头的时候有问题吗？还是在发送邮件到自定义域之前需要设置一些配置？