<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">This is veering WAY off topic, but I’m curious that for only 2k users you find it effective to run your own email. Having done it myself for years I can’t imagine diving back in unless it was a full time thing. <br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jun 29, 2021, at 12:37 PM, Bill Cole <<a href="mailto:mmlist-20120120@billmail.scconsult.com" class="">mmlist-20120120@billmail.scconsult.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">I help manage email systems that see unceasing attempts to break into accounts, often using username+password combinations leaked by other systems. At any point in time, one smallish mail system I work with (~2k users) will have dozens of attack sources temporarily blocked at the network level by automated tools that can detect some careless authentication attacks. The simple fact that the Bad Guys find this sort of attack to be worth mounting is enough for me to know that it is worth mitigating, even if I were not aware of how exactly they use compromised accounts. Unfortunately, due to users ignoring vehement advice about password re-use, I have seen the impact that email compromise can have on both businesses and on individual lives.</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""></div></blockquote></div><br class=""></body></html>