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Stop building automations. Start running your business

https://www.fluxtopus.com/automate-your-business
1•valboa•1m ago•1 comments

You can't QA your way to the frontier

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1•gk1•2m ago•0 comments

Show HN: PalettePoint – AI color palette generator from text or images

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1•latentio•3m ago•0 comments

Robust and Interactable World Models in Computer Vision [video]

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1•rmason•8m ago•0 comments

Notes for February 2-7

https://taoofmac.com/space/notes/2026/02/07/2000
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https://www.theregister.com/2026/02/07/boomers_vs_zoomers_workplace/
2•Willingham•16m ago•0 comments

The Big Hunger by Walter J Miller, Jr. (1952)

https://lauriepenny.substack.com/p/the-big-hunger
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The Genus Amanita

https://www.mushroomexpert.com/amanita.html
1•rolph•23m ago•0 comments

We have broken SHA-1 in practice

https://shattered.io/
4•mooreds•23m ago•2 comments

Ask HN: Was my first management job bad, or is this what management is like?

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Ask HN: How to Reduce Time Spent Crimping?

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KV Cache Transform Coding for Compact Storage in LLM Inference

https://arxiv.org/abs/2511.01815
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A quantitative, multimodal wearable bioelectronic device for stress assessment

https://www.nature.com/articles/s41467-025-67747-9
1•PaulHoule•32m ago•0 comments

Why Big Tech Is Throwing Cash into India in Quest for AI Supremacy

https://www.wsj.com/world/india/why-big-tech-is-throwing-cash-into-india-in-quest-for-ai-supremac...
1•saikatsg•32m ago•0 comments

How to shoot yourself in the foot – 2026 edition

https://github.com/aweussom/HowToShootYourselfInTheFoot
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Eight More Months of Agents

https://crawshaw.io/blog/eight-more-months-of-agents
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From Human Thought to Machine Coordination

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1•walterbell•35m ago•0 comments

The new X API pricing must be a joke

https://developer.x.com/
1•danver0•36m ago•0 comments

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DavMail Pop/IMAP/SMTP/Caldav/Carddav/LDAP Exchange Gateway

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The New Playbook for Leaders [pdf]

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1•mooreds•49m ago•1 comments
Open in hackernews

Self hosting mail server: external incoming/outgoing email problems

1•tonguim•3mo ago
Good day!

After setting up our own mail server, external emails doesn't come and emails and nor going out.

Mail server was previously hosted by OVH. Any help is much appreciated. Thanks.

; ; BIND data file for local loopback interface ; $TTL 604800 @ IN SOA mango.tkangz.sa. admin.tkangz.sa. ( 2025101405 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL

@ IN NS mango.tkangz.sa. @ IN NS ns.tkangz.sa.

; ----- Serveurs de noms ----- mango IN A 10X.XXX.243.111 ns IN A 10X.XXX.243.112

; ----- Web OVH ------ @ IN A 87.98.154.146 www IN CNAME @

; ----- Email sur Google ----- ;@ IN MX 1 smtp.google.com.

@ IN MX 1 ASPMX.L.GOOGLE.COM. @ IN MX 5 ALT1.ASPMX.L.GOOGLE.COM. @ IN MX 5 ALT2.ASPMX.L.GOOGLE.COM. @ IN MX 10 ALT3.ASPMX.L.GOOGLE.COM. @ IN MX 10 ALT4.ASPMX.L.GOOGLE.COM.

_sophie.tkangz.sa. IN TXT "v=SOPHIE1; p=none; rua=mailto:admin@tkangz.sa" @ IN TXT "v=spf1 include:_spf.google.com ip4:10X.XXX.243.111 ~all"

google._domainkey IN TXT ()

; ----- Service internes ----- pmb IN A 10X.XXX.243.38 gpa IN A 10X.XXX.243.36

; ------ Sous domaine demandés par les partenaires ----- dspace IN A 52.92.8.10

(END)

Comments

Bender•3mo ago
HN is not really a good place to troubleshoot such things but I will take a look.

I do not see an MX record in public DNS for tkangz.sa assuming that is the domain in question. I do not even see NS records for that domain in the root servers. Your DNS admin needs to verify they updated the name server configuration for the root DNS servers. Usually this is in a web interface option called something like "manage your DNS servers" in the new registrar. This can take some time to propagate depending on the back-end of the old and new registrars. If unsure call the new registrar and describe the problem.

    dig +short NS sa | head -n1
    s2.dns.sa.
    
    dig @s2.dns.sa. NS tkangz.sa | grep status
    ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN
Status should be "NOERROR" and list the names and IP addresses of your new name servers. After that is resolved then ensure the PTR record at the new location as been updated to match the forward mail server name.
tonguim•3mo ago
Thank you Bender for answering and for the hints. What are those two dig commands are for?
tonguim•3mo ago
This is some additional input about Our mail service is hosted by Google. The challenge we are facing is how to make Google recognize and accept external email coming from outside of Google and also deliver messages from our domain to non Google based addresses.