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Ask HN: Know of a program to increase delivery rate of confirmation emails?
Hey everyone, our startup, Addoway (www.addoway.com), is having some issues delivering emails to some users after they register on our site to confirm their email address. The problem is happening to a few percent of registrants on the site and there does not seem to be a common email provider among those who do not receive the email.<p>Does anyone know of a web service we can utilize to fix this or improve the delivery rate? Thanks for your help.
- seven 16y agoDo you use a proper mailserver to deliver the mails? Could greylisting be the problem? I mean, does your mailserver follow the rules, like resending mails if the other server gives a '450 recipient rejected - try it later' notice?
- addoway 16y agoWe use exim mail server, and I believe the settings are configured to our web-host's defaults. Where would go to view or configure these rules?
- seven 16y agoSeems like I was on the wrong track. Exim should do the job. Some people do SMTP on their own, without using a mailserver that fully implements the RFCs. Read http://news.ycombinator.com/item?id=1151123 http://news.ycombinator.com/item?id=1151123 to get some more insight about greylisting. Check out your exim logfile to get more knowledge about your problem. In case you have trouble interpreting the data, just post an anonymised excerpt. I am sure somebody will help.
- addoway 16y agoThanks for the tip seven. ;)
- eclark 16y agoAre you on EC2 or other shared hosting? If you are then try getting a different ip. Lots of shared hosting ip's are heavily abused before you have used them.
- braindead_in 16y agoDKIM signature helped me a lot. Reverse DNS and SPF records are also good to have.