A história do Dovecot: o pombal que virou o IMAP

The history of Dovecot: the dovecote that became IMAP

In July 2002, a Finnish developer who had already written irssi released an IMAP server designed to be neither Courier nor UW. He called it Dovecot — a shelter for pigeons. Five years later, on April 13, 2007, version 1.0.0 arrived. Timo Sirainen noted: “almost five years, but it is ready.” Twenty-four … Read more

A história do Postfix: o correio que nasceu na IBM

The history of Postfix: the mail system born at IBM

In 1997, Wietse Venema at the IBM Thomas J. Watson Research Center began writing an MTA so he would not have to live with Sendmail. On December 14, 1998, the code was released. It was called VMailer, then IBM Secure Mailer, then Postfix — “post” for mail, “fix” for repair. Twenty-eight years later, Postfix … Read more

A história do XCP: o cloud aberto e o XCP-ng

The history of XCP: the open cloud and XCP-ng

XCP was the free XenServer ISO. Citrix opened up the product in 2013, and XCP died on the wiki. In 2017, the Free edition lost live storage, dynamic memory, and GPU features. Olivier Lambert of Vates launched a Kickstarter, called it XCP-ng — next generation — and on March 31, 2018, released 7.4. The … Read more

A história do XenServer: da Citrix ao nome de volta

The History of XenServer: From Citrix to Getting Its Name Back

XenServer is the product. Xen is the hypervisor. The confusion has lasted nineteen years: XenSource packages Cambridge’s work, Citrix buys it for half a billion, renames it Citrix Hypervisor, private equity restores the name, and in July 2026 XenServer 9 becomes “Citrix” again and supports every kind of workload — not just desktops. … Read more

Servidor de IA recondicionado com 64 GB de VRAM

Refurbished AI server with 64 GB of VRAM

VRAM determines the model. Dense Qwen 27B–32B, quantized Llama 70B, Mixtral 8×7B — these require 32 to 64 GB, not the 24 GB of a 4090. Engineer Donato Capitella, with Bargain Hardware, built a refurbished Supermicro with four data center GPUs (64 GB total) for around £2,000 and benchmarked V100, P100 … Read more