I started on grokthis.net, they got acquired by Rackspace, stuck w/ rackspace longer than I should, groomed an elastic AWS IP for a year, got reverse DNS Mapping on it, and it's been pretty good.
Years ago, I was blocked once a year, and have not really seen much deliverability issues. More recently, either due to the reputation, or AWS being more diligent in blocking abusers, or blocklists being more focused, I have not had many if any issues. DKIM, SPF, DMARC all setup help.
Rspamd, postfix, dovecot, and roundcube are the tools I use to manage it, and it works for my pretty light load. There was a fun incident early on where my Bank did not send a 'Date: ' header (which is legal, per spec), but an rspamd default rule scored that as a high spam signal.
It's helped me learn about SMTP and all the related tech, and for someone who's in systems + operations, it's not that heavy a lift to do on the off time.
I started on grokthis.net, they got acquired by Rackspace, stuck w/ rackspace longer than I should, groomed an elastic AWS IP for a year, got reverse DNS Mapping on it, and it's been pretty good.
Years ago, I was blocked once a year, and have not really seen much deliverability issues. More recently, either due to the reputation, or AWS being more diligent in blocking abusers, or blocklists being more focused, I have not had many if any issues. DKIM, SPF, DMARC all setup help.
Rspamd, postfix, dovecot, and roundcube are the tools I use to manage it, and it works for my pretty light load. There was a fun incident early on where my Bank did not send a 'Date: ' header (which is legal, per spec), but an rspamd default rule scored that as a high spam signal.
It's helped me learn about SMTP and all the related tech, and for someone who's in systems + operations, it's not that heavy a lift to do on the off time.