I don't need fault tolerance if it is going to be down for 10 hours I don't care. If I run it I am going to fix it anyway and retry registration process for whatever I needed mail.
Spam filtering use 10minute mail or something for crap that you don't care. Give your mail address to people and companies you actually want to deal with. Better just keep some spam box on free provider where you sign up for crap.
I don't care about web interface I have multiple boxes anyway so I have to use client app where I can see all stuff at once. (why people think you can have only ONE "THE ONE" mail address for everything?)
DKIM and stuff does not matter if you send ONE EMAIL A MONTH or two. Mostly what people do is that they receive stuff (registration mails for crap).
That said, if you send out bulk mail like in 1k a day you really need DKIM, SPF, DMARC and stuff.
If you run company email server it might be better to do it with email provider or get marketing to send mass mails with mailchimp or sendgrid.
When you want to run mail server for friends and family you are just being silly and if there will be 10 hours downtime you would not care about... Guess what your brother in law wanted to sign up for free month april on por..ekhm...pluralsight and he is going to be mad at you (and you should not tell that to your sister).
Yes if you send 1k mails a day, if you send 1 a day or 1 a week even google will pass it through no problem.
I send all kinds of test stuff to my own gmail accounts and other providers. Unless you send really a lot email or unless someone marks you as a spam it is not an issue.
Blocking spammers is about rate limiting, if you are "nigerian prince" - one email a day - is not going to help you finding a person who wants to help you. Ideally you would like to send emails to everyone at once to find that one special person who wants to help you.
I don't need fault tolerance if it is going to be down for 10 hours I don't care. If I run it I am going to fix it anyway and retry registration process for whatever I needed mail.
Spam filtering use 10minute mail or something for crap that you don't care. Give your mail address to people and companies you actually want to deal with. Better just keep some spam box on free provider where you sign up for crap.
I don't care about web interface I have multiple boxes anyway so I have to use client app where I can see all stuff at once. (why people think you can have only ONE "THE ONE" mail address for everything?)
DKIM and stuff does not matter if you send ONE EMAIL A MONTH or two. Mostly what people do is that they receive stuff (registration mails for crap).
That said, if you send out bulk mail like in 1k a day you really need DKIM, SPF, DMARC and stuff.
If you run company email server it might be better to do it with email provider or get marketing to send mass mails with mailchimp or sendgrid.
When you want to run mail server for friends and family you are just being silly and if there will be 10 hours downtime you would not care about... Guess what your brother in law wanted to sign up for free month april on por..ekhm...pluralsight and he is going to be mad at you (and you should not tell that to your sister).