On 2021-04-29 02:42, Demi Marie Obenour wrote:
Many legitimate ISPs (and even some cloud providers) block port 25 outbound, so yes.
might be why even microsoft, dreamhost, ovh, have clients try port 465, 587, and even some do try port 993, i cant find that mta that do guide one this direction in how to send email
as a small esp, i have simply got enough and now block custommer only ports to prevent studpid vps hosters block so much that it impossible for custommers doing better mta setup
i reversed blacklists to whitelists of only known custommer asn, and after that change no more abuse, no complains from custmmers any more, yet custommers that is missing in my whitelist asn can still email / sms me if needed help
did i forget amazon ? :/
