IT Notes
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  • 2024-06-22

    secure the email system

  • 2024-06-18

    how to use reject sender login mismatch in postfix

  • 2024-06-13

    how to enable managesieve for roundcube

  • 2024-06-09

    how to disable port 587 and 143 in mailserver

  • 2024-06-04

    force smtp client to login using TLS

  • 2024-05-25

    how to enable sieve for snappymail

  • 2024-05-25

    how to disable sasl auth on postfix port 25

  • 2023-10-09

    why metadata is important in big data systems

  • 2023-10-09

    what registrars provide free email hosting

  • 2023-10-09

    variants for regex in ruby

  • 2023-10-09

    the figure for hadoop app names

  • 2023-10-09

    steps for deploying docker to GKE

  • 2023-10-09

    statistics for IMDB works title

  • 2023-10-09

    static class methods in ruby and scala

  • 2023-10-09

    some useful kubectl commands

  • 2023-10-09

    secondary name node role

  • 2023-10-09

    script and spark for small dataset

  • 2023-10-09

    push personal images to docker hub

  • 2023-10-09

    ping to three usa locations from hk in busy time

  • 2023-10-09

    ping to US west east and NL

  • 2023-10-09

    ping difference from Japan to US west central east

  • 2023-10-09

    perl run out memory issue

  • 2023-10-09

    more things to bear in mind about k8s

  • 2023-10-09

    making a docker for running perl

  • 2023-10-09

    long domains are reasonable even in mobile times

  • 2023-10-09

    linux journal dir size increase quickly

  • 2023-10-09

    introduction to 199903 xyz mail

  • 2023-10-09

    install postfix dovecot squirrelmail letsencrypt on ubuntu

  • 2023-10-09

    install mongodb from official source on ubuntu 18.04

  • 2023-10-09

    insert values for complicated structure in hive

  • 2023-10-09

    iCloud silent filtering still exists

  • 2023-10-09

    how to use regex in ruby

  • 2023-10-09

    how to use gmail as free domain email

  • 2023-10-09

    how to use cloudflare email route as mail gateway

  • 2023-10-09

    how to setup virtual alias domains in postfix

  • 2023-10-09

    how to setup vim autoindent to 4 spaces

  • 2023-10-09

    how to setup subdomain on xyamail hosting

  • 2023-10-09

    how to query webserver log with spark

  • 2023-10-09

    how to load data into hive to skip headers

  • 2023-10-09

    how to implement static methods in perl ruby and scala

  • 2023-10-09

    how to get started on rails7

  • 2023-10-09

    how to enable transactions for hive table

  • 2023-10-09

    how to enable systemd service in debian by ChatGPT

  • 2023-10-09

    how to enable rsync daemon on ubuntu

  • 2023-10-09

    how to disable ipv6 on debian

  • 2023-10-09

    how to define a model in rails7

  • 2023-10-09

    how to clean data with regex in spark

  • 2023-10-09

    how spark handles null and abnormal values

  • 2023-10-09

    hive partitions sample

  • 2023-10-09

    for free email which is the best and why

  • 2023-10-09

    does mx server require a matching ssl certificate

  • 2023-10-09

    do you know GMX mail is changing

  • 2023-10-09

    do not use icloud email from china region

  • 2023-10-09

    dataflow for a classic analysis job

  • 2023-10-09

    create my ubuntu docker image for k8s

  • 2023-10-09

    checkpoints for kubernetes ops

  • 2023-10-09

    check which linux process the port is opened by

  • 2023-10-09

    check if your vps smtp is blocked by big providers

  • 2023-10-09

    calculate urban words vote in spark

  • 2023-10-09

    big data workflows

  • 2023-10-09

    azure does have good networking

  • 2023-10-09

    auto setter and getter in scala class

  • 2023-10-09

    articles for installing and setting up the email system

  • 2023-10-09

    analyse iris data with spark and sklearn

  • 2023-10-09

    a sample dataset for hive

  • 2023-10-09

    Why you should use GMX mail

  • 2023-10-09

    Why hostname is so important in mail system

  • 2023-10-09

    Why I drive Maserati

  • 2023-10-09

    UI changes for 1and1 mail

  • 2023-10-09

    Two policyd services I used for postfix

  • 2023-10-09

    Those email providers with mail as domains

  • 2023-10-09

    Start training AI job by using GCP ai platform from scratch

  • 2023-10-09

    Spark RDD is not as fast as dataframe

  • 2023-10-09

    Processes for changing mailserver hostname

  • 2023-10-09

    NYC taxi dataset in March 2016

  • 2023-10-09

    Important changes to XYA Mail on March 2023

  • 2023-10-09

    IT industry in France and German

  • 2023-10-09

    How to setup OpenDMARC for postfix

  • 2023-10-09

    How to implement free failover function with Cloudflare

  • 2023-10-09

    How to enable RBL checks for Postfix

  • 2023-10-09

    How to choose the right email provider

  • 2023-10-09

    HDFS write operation progress

  • 2023-10-09

    Federal funding for research projects in 2016

  • 2023-10-09

    Email delivery testing for xyamail

  • 2023-10-09

    ETL works by sample

  • 2023-10-09

    Default GCP instance disk IO sucks

  • 2023-10-09

    Dataflow in data warehousing ecosystem

  • 2023-10-09

    Changes on Shenzhen Administrative Regions

  • 2023-10-09

    Backup MX should not setup relayhost

  • 2023-10-09

    BF special offer from XYA Mail

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