Author Topic: Error sending mail to a specific domain (Helo command)  (Read 203 times)

andy910304

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Error sending mail to a specific domain (Helo command)
« on: September 27, 2018, 10:00:19 pm »
Hello, I have the following problem with sending mail to a specific domain (nauta.cu), it returns the following status, with the receipt of emails to the server there are no problems, only with the sending to this domain. To other domains if I have sent the emails and have arrived (gmail, yandex.com, geia.cu, ecme.co.cu)

1-host mail2.etecsa.net[181.255.231.40] said: 450 4.7.1 : Helo command rejected: Host not found (in reply to RCPT TO command)

2-connect to mail2.etecsa.net[181.255.231.40]:25: No route to host

3-Host or domain name not found. Name service error for name=nauta.cu type=MX: Host not found, try again