Correct DKIM, Reverse DNS configuration to send from 2 different domains?
John Moore asked: I have set up Postfix on an Ubuntu 18.04, with a view to sending emails from two different domains, which I will refer to here as abc.com …
Default SMTP functionality if one of multiple addresses is invalid
freefaller asked: Although this is effectively a programming question, my gut feeling is that subject is more suited to this site. However, if you feel it is better suited to …
Postfix and Dovecot – No encryption on SMTP
BDevGW asked: currently I’m working on my veary own mailserver but as for now I can’t get SMTP up correctly. I use Dovecot with postfix. When I try to ad …
Check if open SMTP connection is closed/timed out
clarkk asked: Is it possible to send some sort of ping to a SMTP server to check if the connection is still open and ready to send a mail The …
My mail hosting provider rejects test email relayed from postfix on FQDN-less host, but thunderbird ok
Adam asked: When I send mail with Thunderbird via my mail hosting provider, there’s no problem. However I set up postfix in the usual way so that it functions as …
Does Postfix also operate as MSA?
papakota asked: I’m just curious whether Postfix also plays a role of MSA in a process of SENDING an e-mail? In other words, does MUA “talk” directly to MTA (say, …
ssmtp error on trying to send emails
Oscar Vazquez asked: I’m trying to send emails from command line because I need to create a shell script later to send an email. this is my configuration: # # …
Ask SMTP Server for Delivery Status Notification
tiamat asked: I would like to know if this is possible to ask a SMTP Server if it received a specific email even if I’m not the server who sends …
gsuite gmail smtp-relay from google compute engine
rickb asked: Can’t get this to work. Been over all of the doc sites multiple times and scoured issues here and elsewhere, have tried to follow responses and I’m getting …
Can SMTP retries come from different IP addresses?
Novox asked: I have a FortiMail with Greylisting turned on. The idea is that only after a valid SMTP retry, an email will get released. However, it appears that for …