Mailpiler not receiving any emails

[Rogerphilip]

I had set up an instance of mailpiler (v1.3.4) on ubuntu 18.04. When I was setting it up, it was able to receive all the e-mails sent to it and archive them. But after that I have observed that it is not receiving any new mails. Whenever I send an email to the archival id, it bounces and I get back the following errors:

When the mail is sent from a mail id running on postfix I get the below error:

<[e-mail]>: Domain archive.mydomain.net does not accept mail

(nullMX)

From gmail, I get the following error:

Address not found
Your message wasn't delivered to [e-mail] because the domain archive.mydomain.net couldn't be found. Check for typos or unnecessary spaces and try again.

I wasn’t able to send emails using telnet either. In the web gui, the status for piler and smarthost are shown as OK.

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Am I doing anything wrong? Can anyone help me please? Thanks in advance.

[Janos SUTO]

I wonder why you installed an older release (1.3.4) instead of using a more recent version, eg. 1.3.11. Anyway, I suspect that the emails don’t reach the archive. I suggest to run a packet dump utility (eg. ngrep) on port 25 on the archive host, and verify that there’s an smtp traffic. Also what’s in the mail.log file? Any reference of piler-smtp receiving traffic?

[Rogerphilip]

Thank you for the response. I destroyed the old instance and installed the latest docker build of mailpiler. However the issue still persists.

I tried testing the smtp service using https://www.smtper.net/ and https://www.wormly.com/test-smtp-server. The test emails sent by these tools are received by piler, but mails sent from my primary domain and gmail are not being received. This has me very confused. I ran ngrep and it did capture the activity on port 25.

As for the logs, I will share at the earliest. In it, there are references to mails received from the above mentioned tools but not from gmail or my primary domain.

[Janos SUTO]

Then you need to verify that archive.mydomain.net actually resolves to the archive. You must have some issue if smtper can access your site, but gmail or your mail server can’t.

[Janos SUTO]

Any update on the matter?

[Janos SUTO]

Let me know if there's any new information regarding the matter.