Bulletproof email infrastructure setup guide • Hacker News Board

Re: Bulletproof email infrastructure setup guide

#31

Post by edgesrazor » Fri, Mar 16, 2012, 12:01 AM UTC

igor_a wrote: post #18

edgesrazor wrote: post #14

Thanks! This is a great walk-through for those using a solution with only 1 or a few IP addresses associated with little chance of that IP changing. Do you have any experience for those using services such as Amazon SES or Google Apps? Setting up the PTR records for reverse DNS lookups are very tricky since Amazon and Google are always rotating the IP addresses for their mail servers. We've been fighting with this in…

I haven't worked with external emails providers. For now we are sending around 100-150k emails/day and we are using postfix as MTA. Regarding server side rejects - again reading postfix logs can save you from such things. As an example recently we started seeing that we can't deliver a lot of emails to orange.fr, and the worst - if send just one email it always was accepted but when we sent bulk newsletter we had a l…

I think I might have to set up postfix and do some experimenting. One of the strangest things I've seen is that some domains are rejecting emails with links to our site in them, but will accept them if the links are removed (plain text or HTML).

I swear, someone could make a good living handling this for companies looking to handle transactional email internally.

Re: Bulletproof email infrastructure setup guide

#32

Post by ciupicri » Fri, Mar 16, 2012, 1:52 AM UTC

dredmorbius wrote: post #29

Great guide a couple of comments: - DKIM, aside from buying you a "non-spam" pass (or at least more generous first treatment), can get you into "most favored sender" status with big email providers. Notably Yahoo, who, despite corporate troubles is still a huge player in hosted email. - Even if you're using a mail service provider, setting up an SPF record for your domain, with your MSP's IPs (or better, an "include:…

Speaking of Yahoo, I and many others hate their rate limiting which is ridiculously low by default, something like 1 email per day. If you want more you need to fill in a form [1].

[1] http://help.yahoo.com/l/us/yahoo/mail/postmaster/bulkv2.html if I remember correctly

Re: Bulletproof email infrastructure setup guide

#33

Post by dredmorbius » Fri, Mar 16, 2012, 3:32 AM UTC

ciupicri wrote: post #32

dredmorbius wrote: post #29

Great guide a couple of comments: - DKIM, aside from buying you a "non-spam" pass (or at least more generous first treatment), can get you into "most favored sender" status with big email providers. Notably Yahoo, who, despite corporate troubles is still a huge player in hosted email. - Even if you're using a mail service provider, setting up an SPF record for your domain, with your MSP's IPs (or better, an "include:…

Speaking of Yahoo, I and many others hate their rate limiting which is ridiculously low by default, something like 1 email per day. If you want more you need to fill in a form [1]. [1] http://help.yahoo.com/l/us/yahoo/mail/postmaster/bulkv2.html if I remember correctly

It took dropping an extract of our pflogsumm logs (showing very good delivery rates to numerous Y! competitors) on their C-level execs (all I could find) before I got to speak with a "concierge" who apparently expedited the process.

We've got excellent delivery stats now.

Re: Bulletproof email infrastructure setup guide

#34

Post by throwaway64 » Fri, Mar 16, 2012, 11:17 AM UTC

dredmorbius wrote: post #29

Great guide a couple of comments: - DKIM, aside from buying you a "non-spam" pass (or at least more generous first treatment), can get you into "most favored sender" status with big email providers. Notably Yahoo, who, despite corporate troubles is still a huge player in hosted email. - Even if you're using a mail service provider, setting up an SPF record for your domain, with your MSP's IPs (or better, an "include:…

http://multirbl.valli.org/

this is great for keeping track of which whitelists/blacklists your ip is on.