Simple Postfix Hardening

ADD TO  /etc/postfix/main.cf vi /etc/postfix/main.cf   # Hardening SSL configuration# # enable opportunistic TLS support in the SMTP server and clientsmtp_tls_security_level = maysmtp_tls_loglevel = 1 # only offer authentication after STARTTLSsmtpd_tls_auth_only = yes # Disable SSL compressiontls_ssl_options = NO_COMPRESSION # Disable SSLv2 and SSLv3 leaving TLSv1, TLSv1.1 and TLSv1.2 enabled.smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3smtpd_tls_protocols = !SSLv2 Read more about Simple Postfix Hardening[…]

ESXi 6.7 Keep Getting PANIC bora/vmkernel/main/dlmalloc.c: 4924 – Usage error in dlmalloc

So the only fix for this is to roll back to ESXi 6.5 after many calls with VMWare. The issue i came across was because i upgraded to 6.7 then did another upgrade to a 6.7 patch i couldnt just roll back my hosts to 6.5 – Vmware said i need to rebuild from scratch Read more about ESXi 6.7 Keep Getting PANIC bora/vmkernel/main/dlmalloc.c: 4924 – Usage error in dlmalloc[…]