Question

以下是设置：

iRedMail服务器设置，用于发送和接收电子邮件。 （发送手工制作的电子邮件）
MailGun服务发送电子邮件。 （发送自动计算机生成的邮件）

将邮件从MailGun发送到iRedMail服务器实例以外的邮件服务器。

从MailGun向我的iRedMail服务器发送邮件将被拒绝，状态码为450.

下面的粘贴显示MailGun发送到我的iRedMail服务器实例的电子邮件的MailGun日志条目。

{
    "severity": "permanent",
    "tags": [],
    "delivery-status": {
        "tls": true,
        "mx-host": "m1.managemun.org",
        "code": 450,
        "description": "",
        "session-seconds": 1.262861967086792,
        "utf8": true,
        "retry-seconds": 14400,
        "attempt-no": 8,
        "message": "4.1.8 <bounce+595546.eb6855-omar=managemun.org@mg.managemun.org>: Sender address rejected: Domain not found",
        "certificate-verified": true
    },
    "recipient-domain": "managemun.org",
    "id": "1GWMCXnjTBKo5MlCth6Faw",
    "campaigns": [],
    "reason": "old",
    "user-variables": {},
    "flags": {
        "is-routed": false,
        "is-authenticated": true,
        "is-system-test": false,
        "is-test-mode": false
    },
    "log-level": "error",
    "timestamp": 1507644954.828214,
    "envelope": {
        "transport": "smtp",
        "sender": "contact@managemun.org",
        "sending-ip": "XXX.XXX.XXX.XX",
        "targets": "omar@managemun.org"
    },
    "message": {
        "headers": {
            "to": "omar@managemun.org",
            "message-id": "6be3bf88-7725-7758-e995-XXXXXXXXXXXXX@managemun.org",
            "from": "ManageMUN <contact@managemun.org>",
            "subject": "Password Reset"
        },
        "attachments": [],
        "size": 1656
    },
    "recipient": "omar@managemun.org",
    "event": "failed"
}

如何解决此问题？

如果您对设置有任何建议，请随意批评建议

Answer 1

返回的错误是由Sender Address Verification引起的。收件人服务器执行回调发件人地址的MX记录以验证来自地址<bounce+595546.eb6855-omar=managemun.org@mg.managemun.org>的envelope.mail-。

在这种情况下，收件人服务器会尝试回拨“mg.managemun.org”，但由于子域没有MX记录而失败。因此，通过将Mailgun的MX记录添加到您的子域mg.managemun.org，这些电子邮件服务器的MX查找将成功，服务器将接受您的邮件。 Mailgun的两个MX记录是或可以引用here：

Value : mxa.mailgun.org
Priority: 10

Value : mxb.mailgun.org
Priority: 10

**免责声明我在Mailgun工作

MailGun

1 个答案: