It is absolutely astonishing that we rely on layers and layers of shims/compatibilities/hacks to keep a technology that was well-meaning and ideal 30ish+ years ago running in the 21st century.
Same thing in the VOIP/telecom space.
Microsoft recently had issues with mail deliverability - most of our O365 tenants had a notice reminding us to check SPF, DKIM, DMARC (we're configured properly already) - some of our tenants were having issues mailing smaller mail providers (ISP-level) because the small provider is outright blocking IPs and IP ranges due to spam coming from the same IP address/mail server we're trying to send from.
Comments
It is absolutely astonishing that we rely on layers and layers of shims/compatibilities/hacks to keep a technology that was well-meaning and ideal 30ish+ years ago running in the 21st century.
Same thing in the VOIP/telecom space.
Microsoft recently had issues with mail deliverability - most of our O365 tenants had a notice reminding us to check SPF, DKIM, DMARC (we're configured properly already) - some of our tenants were having issues mailing smaller mail providers (ISP-level) because the small provider is outright blocking IPs and IP ranges due to spam coming from the same IP address/mail server we're trying to send from.