Why do my emails from domain mail end up in spam?

Question

Email

Hello, the problem is this: mail-tester showed that I am on 2 SORBS black lists and on the Hostkarma yellow list. Letters are sent without any third-party services, previously they did mailings through 2 services, now there is no need for mailings (we no longer do mass arlinks) this is a test of a letter sent in simple mode with gmail (G suite) domain mail. The test also showed that there is 1 broken link, although it is correct and the error "Your letter contains 0% of the text." although there is enough text. There are more DKIM questions on the test:
1. DKIMWL_WL_MED DKIMwl.org - Whitelisted Medium sender
2. DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid
I also found myself blacklisted here:
b.barracudacentral.org
pbl.spamhaus.org
spam.dnsbl.sorbs.net
zen.spamhaus.org
IP, as far as I know, I have a dynamic one. If you need any more information, please write. I'm not a specialist, I need help, 1st time on the forum. If someone can solve my problems for a fee - write

Answer 1

if you have a dynamic IP address, then don't even try to do anything, nothing will work.
For successful delivery of letters, there must be:
the PTR record matches the sender, this is achieved only with a white static IP
record in the DNS of the SPF type - indicating from which addresses the mail will be valid
DNS record DKIM - this is a signature, desirable, but not required

Answer 2

Blacklists do not affect anything now, if you take ip4, then there are almost no such that would not be in some kind of list. dkim has a strong influence, now letters without dkim or with invalid dkim immediately go to spam, set up dkim and everything will be ok, if the domain and mail are tied to gmail, then just send via Google smtp, and he will sign everything.

Answer 3

If the domain was blacklisted for the first time, then you can simply write a letter to the administrator explaining the reasons why this happened (maybe the base is from unverified sources or mailing without user agreement) and ask to be removed from this list .
Often, after sending such a request, within 1-2 days you should be answered and informed either that the address has been removed from the black list, or that additional information is needed.