"Byunghee HWANG (황병희) via mailop" <[email protected]> writes:
> If you're using Postfix as your outbound SMTP server, you can adjust the > transmission rate per second, similar to a reference rate, when sending > emails. Personally, I adjust the transmission rate to Google based on > the reference rate. For emails to Google specifically, I increased the > time it takes for a single transaction from 0 seconds to 3 > seconds. Everytime, 99.99999999% of my email transactions go to Google > by automatic forwarding. > > If you are interested, please check out the following references: > <https://www.mail-archive.com/[email protected]/msg100568.html>. Here are a concrete example of mine: </etc/postfix/master.cf> google unix - - - - - smtp -o soft_bounce=yes </etc/postfix/main.cf> smtp_tls_policy_maps = hash:/etc/postfix/tls_policy transport_maps = hash:/etc/postfix/transport google_destination_concurrency_failed_cohort_limit = 100 google_destination_rate_delay = 3 </etc/postfix/transport> gmail.com google: google.com google: </etc/postfix/tls_policy> gmail.com verify google.com verify Above settings are a compromise with Google. Like Microsoft, Google also imposes limits on the size of email transmissions per mail server (outbound), as you know, thanks! Sincerely, Byunghee
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