Postfix relay smtp to 2 relayhosts for same domain
1620
How to test and actually perform a transfer of an internet domain to a new server regarding mail?
60147
hostname -I spamming more than one IP address
134730
NAT to two different servers on the same port via hostname with Mikrotik RB2011
89024
Configure HAProxy to include host headers for different backends
130635
Postfix - How to prevent external clients from using my server as a relay?
59661
Top level domain/domain suffix for private network?
47105
Postfix with two arguments
150732
Host multiple domains with Apache
59322
Access-Control-Allow-Origin Multiple Origin Domains?
51925
Configure router to redirect different hostnames to different machines
90127
postfix: relay access denied. How to fix it?
32801
SMTP Relay available in Pro Account?
75379
What simpler mail server can I use instead of postfix?
103131
Multiple controller extensions communication
84137
SSH tunnelling with multiple dynamic port forwardings
103980
Why multiple PTR records in DNS is not recommended?
15844
How can I prevent Postfix from accepting mail from domains it owns, that it didn’t send?