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[28 May 2012 | Comments Off on Block outbound email to a specific domain with qmail | 910 views]

With Sendmail, I can block all email from (a sending domain to the server in question) and to a (foreign) domain using the /etc/mail/access file. However, apparently, it’s not so simple with qmail. Further complicating my need to prevent all users on one of my systems (which uses qmail) from sending email to certain domains is the fact that the system also uses Plesk, so I didn’t really want to start messing around with patching qmail and risk breaking something to do with Plesk.
After a fair bit of research I …