Zimbra 554 5.7.1 error, RCPT error

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nikola011
Posts: 20
Joined: Fri Dec 17, 2021 12:19 pm

Re: Zimbra 554 5.7.1 error, RCPT error

Post by nikola011 »

Hi Phoenix,

Thank you very much for join discusion.

I got this error
Image

And now I am looking for more information how anti spam for mail works.

And I am checking mine mail server, and compare with mail servers from which I don't got mail

I hope I will understand this better ASAP

Thanks a lot
Best regard
Nikola
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L. Mark Stone
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Location: Portland, Maine, US
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Re: Zimbra 554 5.7.1 error, RCPT error

Post by L. Mark Stone »

nikola011 wrote:Hi Guys,

This is how the mail spam filter is set

Image

Do you have any suggestion, because the number of emails that are not arriving has escalated

Thank you very much best regards
Nikola
Putting aside your bank’s issue, your setup on its own will generate a lot of false positives due to your DNS checks. You also shouldn’t check zen and dbl and sbl as zen is a composite list.

Take a look at https://www.missioncriticalemail.com/20 ... ices-2019/ for some setup tips.

Hope that helps,
Mark
___________________________________
L. Mark Stone
Mission Critical Email - Zimbra VAR/BSP/Training Partner https://www.missioncriticalemail.com/
AWS Certified Solutions Architect-Associate
nikola011
Posts: 20
Joined: Fri Dec 17, 2021 12:19 pm

Re: Zimbra 554 5.7.1 error, RCPT error

Post by nikola011 »

Hi Mark,

Thanks a lot for sharing tips, this helps me a lot. Admin has changed, so I'm still learning how Zimbra works.

I will shorten the SBL, XBL and PBL blocklists to just ZEN

Apparently I have a lot of false results.

I'm still researching

Thank you very much

Nikola
nikola011
Posts: 20
Joined: Fri Dec 17, 2021 12:19 pm

Re: Zimbra 554 5.7.1 error, RCPT error

Post by nikola011 »

Hi Guys.

I found this

https://www.claudiokuenzler.com/blog/12 ... n-resolver

Are you currently using the Spamhaus Project's DNS Blocklists (DNSBLs)? Do you access them via the Public Mirrors, for example, query "sbl.spamhaus.org"? Do you use Cloudflare's DNS? If you've answered "yes" to all three of those questions, you need to make some changes to your email infrastructure. These changes are quick and easy to make, but if you fail to make them, you could find that at some point in 2022, all or none of your email is blocked!


This is a similar time when this happened to me.

I am looking for solution for Zimbra

Best regards,
Nikola
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