Why are emails accepted by Outlook but never delivered to the recipient?
Some customers sending mail from external domains to recipients hosted on Outlook or Microsoft 365 are seeing messages disappear. The messages do not arrive in the inbox or…
mail server
Why is our server being blocked even though our domain uses a different IP?
Has anyone dealt with Spamhaus blocking a server when the domain's configured IP address doesn't match the IP shown on the blocklist? For example, the domain resolves to…
Troubleshooting hMailServer Mail Delivery in a Windows Home Lab
I'm building skills for an entry-level IT support role and have been practicing networking, ticketing systems, Microsoft 365 administration, and Active Directory. For my lab, I created a…
MX Guard Dog is offline—how are others handling the outage?
I noticed this morning that no email had arrived since around 5 AM Pacific, so I checked MX Guard Dog's website and found a major outage notice. Their…
Troubleshooting hMailServer Email Delivery in a Home Lab
I'm building my skills for a future Tier 1 or Tier 2 IT support role and have been practicing networking, ticketing systems, Microsoft 365 administration, Active Directory, and…
Why Are My Emails Going to Spam Even with Valid Settings?
I've just set up a mail server for a small website, and I've verified that my SPF, DKIM, and DMARC records are all correct using mail-tester.com. The only…
Why Did My Postfix Server Go Down for 31 Hours Due to Low Entropy?
Hey everyone, I recently experienced a significant downtime on my mail server, which I've been managing as a student for years. It runs Postfix for SMTP and Dovecot…
How do I set up email for my Ubuntu webserver?
I'm running a webserver on Ubuntu via DigitalOcean, and I've set up my domain (blabla.bla) to access it. Now, I want to enable email for the address [email protected].…