Seriously?
If other email providers are blocking you, smarthost through an email provider.
If you're getting brute forced, learn how to set up and run blocklistd or fail2ban.
Not getting 100 meg attachments is an issue that other email providers have, not people who run their own servers. If your server doesn't have any free disk space, that's on you. If it does, then set confMAX_MESSAGE_SIZE to whatever you want.
If by "standard X" you're talking about SPF or DKIM, there are lots of tutorials.
If your email software is vulnerable because of issues with your distro, you're doing things wrong.
The point is if you can't, don't. If you don't want to think about issues like these, then you shouldn't be running servers, anyway, so you're definitely not the target audience.
If you can, then these things aren't issues.
If other email providers are blocking you, smarthost through an email provider.
If you're getting brute forced, learn how to set up and run blocklistd or fail2ban.
Not getting 100 meg attachments is an issue that other email providers have, not people who run their own servers. If your server doesn't have any free disk space, that's on you. If it does, then set confMAX_MESSAGE_SIZE to whatever you want.
If by "standard X" you're talking about SPF or DKIM, there are lots of tutorials.
If your email software is vulnerable because of issues with your distro, you're doing things wrong.
The point is if you can't, don't. If you don't want to think about issues like these, then you shouldn't be running servers, anyway, so you're definitely not the target audience.
If you can, then these things aren't issues.