3 ms·
I set this all up last month with docker-mailserver, SPF, DKIM, DMARC, the rDNS ptr, sharing LE cert with dokku, with alps for webmail, and it all seemed to be
by mappu 5y ago
I set this all up last month with docker-mailserver, SPF, DKIM, DMARC, the rDNS ptr, sharing LE cert with dokku, with alps for webmail, and it all seemed to be working fine (round-trip delivery to Gmail addresses, etc) until one day I tried to email an outlook.com address and immediately got told my IP was blocked.
The mail server's IP is a pretty normal cloud VPS IP from a major hosting company. It's not on any public blocklists. I submitted unblock requests to MS, and signed up for their SNDS service, but all requests were denied without explanation and I simply made no progress.
My conclusion is that this route is impossible - do not waste time trying it.
- encryptluks2 5y ago> Worked great until one provider, Outlook.com, blocked me. Do not try cause you may run into an issue like me and get upset and quit. Now I use Outlook.com instead.
- 3np 5y agoMicrosoft are the worst (and the only ones that ever posed a hassle for us). I recommend raising the issue with support of your cloud VPS. They most likely handle cases like this routinely and have channels to MS that can get this resolved much smoother, IME. It's their IPs, after all.