On Thursday, January 16, 2020 at 7:34:27 PM UTC-5, Walter Lee Davis wrote: > > > > > On Jan 16, 2020, at 6:19 PM, fugee ohu <fuge...@gmail.com <javascript:>> > wrote: > > > > > > > > On Monday, December 30, 2019 at 2:48:06 PM UTC-5, Walter Lee Davis > wrote: > > > > > > > On Dec 29, 2019, at 11:44 PM, fugee ohu <fuge...@gmail.com> wrote: > > > > > > I searched my entire tree starting at / for the name of my mail server > but didn't find it Everything's working it sends mail in production just > fine but I'm trying to figure out how, since it seems I never put the url > of my mail server anywhere? > > > > Your production server may be set up with postfix or sendmail, and thus > the default (SMTP to localhost) will Just Workâ˘. When your application > sends mail, it just sends a raw SMTP message to port 25 on the localhost, > and the mail server running there accepts it and forwards it. That's the > default, baked into Rails, in case you don't configure anything more > specific. > > > > This is almost never what you actually want, because unless your > production Web server is also set up as an authoritative (DNS-verified) > SMTP server, your mail delivery will be spotty at best to large (think > Gmail) recipients. Those services take spam very seriously, and you have to > climb over some tall fences (configured in DNS, mainly, through TEXT and MX > records) in order to please them enough to accept your messages. > > > > This is doubly-true if your application is designed to send mail that is > "apparently-from" someone who is not at your server's domain. Services like > SendGrid exist to take this pain away from you, making sending > transactional e-mail as pain-free as possible, because they work to ensure > that their servers don't end up on banned lists, or get off them quickly. > > > > My recommendation if you want to send mail out to one user that appears > to be from another user, such that they can just hit "reply" in their mail > application and respond to it, send the message with the headers From: > a-real-...@your-server.com, and Reply-to: us...@example.com. That way the > message is deliverable (since it came from you, and you authenticate that > in your DNS settings), but the recipient can simply press Reply and not > have to manually correct the To: address in that message. > > > > Walter > > > > I found google was rejecting mail from my server because I didn't DKIM > and DMARC signatures setup After adding the services how do I ask google to > re-review my mail server if I'm not using gsuite? > > > > I'm pretty sure it's done on a message-by-message basis. I doubt they > maintain a ban-list that you're on, and have to remove you from. Each > message purportedly "from" some other address is a new and special thing, > since headers are so very easy to forge. > > Walter > > They keep adding things you have to do to not be rejected Now they want DKIM and DMARC setup
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