The web project is coded by our own. No Wordpress or other possible points of security holes.
Our project does NOT send any email at all. I have even the sendmail binary disabled from PHP. All emails are sent by Sendgrid (and they are JUST emails of “registration” or “password recovery”). We send about 5 emails per day with this service. So all the emails coming out from my domain are these ones.
EXIM DATA
Queue is always in 0, there’s no signs of “massive sending” and filled queue as in spam scenarios.
The only thing I have is tons of: dovecot_login authenticator failed for [45.142.120.82]: 535 Incorrect authentication data (set_id=XXXXXXXXX) (in XXXXXX a lot of tries)
So, in this scenario, I’m getting crazy … and I would like to go further and DISABLE SMTP at all.
But I need to leave working the POP3 (because I want just to receive emails to an account), and the forwarding service (so emails incoming to one account, are forwarded outside, to a gmail account)
And here is probaly the reason, why you land on the list. Forwarding mails isnt a good idea - if you forward a mail, your server will send as [email protected], but senderdomain.tld doesnt belong to you. So I suggest do disable the mail forwarding to your google account and use their pop service instead: Check emails from other accounts - Computer - Gmail Help
After that, ask Spamhaus to remove your list and check if you get listed again after a while.
It’s not Gmail, sorry, It’s FreshDesk …
I have a redirection from support@mydomain to a freshdesk support email address.
This is normal operation , isnt it ?
I have done this in other domains with no problems at all:
Freshdesk shouldnt be a issue. Did you got any additional informations about why you got blacklisted? Personaly I think disable smtp isnt the right way to go, you should find out why your IP gets blacklisted, it could point to a bigger issue.
Is the server/IP new for you? Are there any chances the previous owner of the server/IP was using it to send spam and that is the reason the IP is blacklisted?
Is your domain name setup on a different server? Maybe on an older server left unattended? And that server has/is being used to send spam, so your domain gets blacklisted?