Email not arriving? Check where a domain’s mail goes with MX records
When messages bounce or vanish, start with two DNS checks: the MX records that say where a domain’s mail is delivered, and the reverse DNS of the…
Jimel S.·4 min read
DreamHost: File Manager attacker took FTP passwords and webmail logins
DreamHost says an attacker exploited third-party software behind its web File Manager and collected the FTP/SFTP passwords of people who logged in…
Jimel S.·3 min read
SPF, DKIM and DMARC explained: stop strangers sending email as your domain
Anyone can put your domain in the From line of an email. Three DNS records let receiving servers tell real messages from forgeries, and Gmail,…
Jimel S.·3 min read