My problem and Mailgun logs
I've "setup and verified" (see context) my sending domain with Mailgun, so I could use it to deliver my contact/order forms via Mailgun API: https://github.com/mailgun/mailgun-php
After successful verification (according to Mailgun) emails get delivered to Gmail addresses only though. Those are error logs provided by Mailgun for other email providers:
{
"severity": "temporary",
"tags": [],
"storage": {
"url": "https://so.api.mailgun.net/v3/domains/mail.itvar.cz/messages/***",
"key": "***"
},
"delivery-status": {
"tls": true,
"mx-host": "mx1.seznam.cz",
"attempt-no": 2,
"description": null,
"session-seconds": 2.4669690132141113,
"retry-seconds": 900,
"code": 451,
"message": "451 4.4.8 Unroutable email address.",
"certificate-verified": true
},
"recipient-domain": "seznam.cz",
"event": "failed",
"campaigns": [],
"reason": "generic",
"user-variables": {},
"flags": {
"is-routed": null,
"is-authenticated": true,
"is-system-test": false,
"is-test-mode": false
},
"log-level": "warn",
"timestamp": 1473673115.668517,
"envelope": {
"transport": "smtp",
"sender": "postmaster@mail.itvar.cz",
"sending-ip": "209.61.151.224",
"targets": "***@seznam.cz"
},
"message": {
"headers": {
"to": "***@gmail.com",
"message-id": "20160912092829.59867.45844.82A5D054@mail.itvar.cz",
"from": "redakce@itvar.cz",
"subject": "Tvar / Objednávka předplatného poštou"
},
"attachments": [],
"recipients": [
"***@gmail.com",
"***@seznam.cz",
"***@gmail.com"
],
"size": 20723
},
"recipient": "***@seznam.cz",
"id": "***"
}
TLDR: 451 4.4.8 Unroutable email address.
{
"severity": "permanent",
"tags": [],
"storage": {
"url": "https://so.api.mailgun.net/v3/domains/mail.itvar.cz/messages/***",
"key": "***"
},
"delivery-status": {
"tls": false,
"mx-host": "postak.satoya.cz",
"attempt-no": 1,
"description": null,
"session-seconds": 2.6076178550720215,
"code": 505,
"message": "505 Your domain has no DNS/MX entries",
"certificate-verified": false
},
"recipient-domain": "itvar.cz",
"event": "failed",
"campaigns": [],
"reason": "generic",
"user-variables": {},
"flags": {
"is-routed": null,
"is-authenticated": true,
"is-system-test": false,
"is-test-mode": false
},
"log-level": "error",
"timestamp": 1473672066.691422,
"envelope": {
"transport": "smtp",
"sender": "postmaster@mail.itvar.cz",
"sending-ip": "209.61.151.224",
"targets": "redakce@itvar.cz"
},
"message": {
"headers": {
"to": "***@gmail.com",
"message-id": "20160912092103.8512.76522.0B575386@mail.itvar.cz",
"from": "redakce@itvar.cz",
"subject": "Tvar / Objednávka předplatného poštou"
},
"attachments": [],
"recipients": [
"***@gmail.com",
"***@predplatne.cz",
"***@itvar.cz",
"***@gmail.com"
],
"size": 20917
},
"recipient": "redakce@itvar.cz",
"id": "***"
}
TLDR: 505 Your domain has no DNS/MX entries
{
"severity": "permanent",
"tags": [],
"storage": {
"url": "https://so.api.mailgun.net/v3/domains/mail.itvar.cz/messages/***",
"key": "***"
},
"delivery-status": {
"tls": true,
"mx-host": "ax.virusfree.cz",
"attempt-no": 1,
"description": null,
"session-seconds": 1.5925419330596924,
"code": 553,
"message": "553 sorry, your envelope sender domain must exist (#5.7.1)",
"certificate-verified": true
},
"recipient-domain": "predplatne.cz",
"event": "failed",
"campaigns": [],
"reason": "generic",
"user-variables": {},
"flags": {
"is-routed": null,
"is-authenticated": true,
"is-system-test": false,
"is-test-mode": false
},
"log-level": "error",
"timestamp": 1473672065.693317,
"envelope": {
"transport": "smtp",
"sender": "postmaster@mail.itvar.cz",
"sending-ip": "209.61.151.224",
"targets": "***@predplatne.cz"
},
"message": {
"headers": {
"to": "***@gmail.com",
"message-id": "20160912092103.8512.76522.0B575386@mail.itvar.cz",
"from": "redakce@itvar.cz",
"subject": "Tvar / Objednávka předplatného poštou"
},
"attachments": [],
"recipients": [
"***@gmail.com",
"***@predplatne.cz",
"***@itvar.cz",
"***@gmail.com"
],
"size": 20933
},
"recipient": "***@predplatne.cz",
"id": "ZKO8IRlbQgqDZ-nrxn0tKg"
}
TLDR: 553 sorry, your envelope sender domain must exist (#5.7.1)
Context
To complicate things further, the domain http://itvar.cz stays in hands of the previous webdesigner / hosting company. That is because the old web of my client is essentially nonmigratable (as I was told) and still needed to work on http://old.itvar.cz.
That means, that:
wwwrequests are transfered to my web with the new hosting and its friendly provider- everything else stays with the old provider
- I can't personally configure anything, I can only send instructions.
I've sent the logs to the old provider and he essentially told me, that this is a problem of Mailgun. To my very limited knowledge of DNS configuration it does not appear so.
Questions
Is this really problem on Mailgun or the old provider configured DNS badly and I should press him more.
Can the problem lie with the sender "redakce@itvar.cz"? This email address exists, but it is, again, managed by the old provider, so I do not know much about it.
Do you see anything else that can cause the problem?
edited: The old provider noticed this field in the logs:
Default SMTP Login>postmaster@mail.itvar.cz. This email address did not exist on the domainmail.itvar.cz. Could that be an issue? He created the address and so far, the issue is not fixed.
Apologies
If it's not clear already, I really know nothing about DNS configuration and domain setup. If that means, that I haven't provided neccessary information or (by the contrary) shared something sensitive, please let me know.
Those are some related questions I've found, but nothing seems to mention similar errors:
- smtp relay only works on gmail accounts
- Emails are not received on any email account except Gmail and Hotmail
- Emails are being rejected by some email providers
EDIT: Issue is resolved
My domain fixed something on his end, so my order forms are working now. I am still waiting for his reply what exactly it was, but for now, it seems pretty apparent, that the problem was with the domain DNS configuration.
Once I will know more, I will answer my question myself.
