[Solved] E-mail not working?

[gmpintus]

Hi, 

I'm trying to set up my 'professorparticular.info' email on my gmail smtp, but I'm having troubbles in setting it up.

I then sent an email from 'professorparticular.info" to my gmail and it wasn't successful.

Is any failure in the email system?

 

thanks

 

find below details of the mailer daimon return:

Undelivered Mail Returned to Sender 

De MAILER-DAEMON@tommy2.heliohost.org em 2022-12-08 09:46

Detalhes

• Delivery report(~877 B)
•  
• Undelivered Message(~1 KB)

 

This is the mail system at host tommy2.heliohost.org.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<gmpintus@gmail.com>: host gmail-smtp-in.l.google.com[74.125.137.26] said:
    550-5.7.25 [65.19.141.77] The IP address sending this message does not have
    a 550-5.7.25 PTR record setup, or the corresponding forward DNS entry does
    not 550-5.7.25 point to the sending IP. As a policy, Gmail does not accept
    messages 550-5.7.25 from IPs with missing PTR records. Please visit
    550-5.7.25  https://support.google.com/mail/answer/81126#ip-practices for
    more 550 5.7.25 information.
    bv5-20020a17090af18500b00219c87a6928si4200747pjb.90 - gsmtp (in reply to
    end of DATA command)

Reporting-MTA: dns; tommy2.heliohost.org
X-Postfix-Queue-ID: E296941563DA
X-Postfix-Sender: rfc822; gianmario@professorparticular.info
Arrival-Date: Thu,  8 Dec 2022 12:46:04 +0000 (UTC)

Final-Recipient: rfc822; gmpintus@gmail.com
Original-Recipient: rfc822;gmpintus@gmail.com
Action: failed
Status: 5.7.25
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.25 [65.19.141.77] The IP address sending this
    message does not have a 550-5.7.25 PTR record setup, or the corresponding
    forward DNS entry does not 550-5.7.25 point to the sending IP. As a policy,
    Gmail does not accept messages 550-5.7.25 from IPs with missing PTR
    records. Please visit 550-5.7.25
    https://support.google.com/mail/answer/81126#ip-practices for more 550
    5.7.25 information. bv5-20020a17090af18500b00219c87a6928si4200747pjb.90 -
    gsmtp

De	gianmario@professorparticular.info
Para	gmpintus@gmail.com
Data	Hoje 09:46

[wolstech]

The reverse DNS record for tommy is missing according to that error (kind of weird considering mail was working and I can see the record if I query for it but I suppose it's possible it disappeared with the recent IP changes we've been doing on Tommy to help with DDoS).

The PTR does seem to exist, so not sure why gmail didn't see it:

> set type=ptr
> 65.19.141.77
Server:  [8.8.8.8]
Address:  8.8.8.8

Non-authoritative answer:
77.141.19.65.in-addr.arpa       canonical name = 77.subnet72.141.19.65.in-addr.arpa
77.subnet72.141.19.65.in-addr.arpa      name = tommy2.heliohost.org
>

 

Edited December 8, 2022 by wolstech
Elaborate and test

[gmpintus]

Then, I'll wait a while and test again.

Thanks for now

[Krydos]

The PTR record was correct, but the A record was incorrect. I temporarily changed the A record of tommy2.heliohost.org to allow the Plesk control panel to be accessible during the DDoS which caused Google to have issues with email. The DDoS has ended and the A record has been changed back so it should be working now. I'm going to close this thread. If you're still having an issue please make a new post.