I am currently configuring my new server which sends outbound mail correctly and receives inbound email when postgrey is turned off, but rejects it continually when enabled (even after hours of retrying). I don't see any place in the configuration to check/set the retry period. Where should I check this? I have just received one "mail delayed" soft bounce message on my external sending email account which says: (domain names and ipaddresses masked) In my mail.log I'm seeing: Thanks for your assistance. Server Details OS: Ubuntu 18.04 ISPConfig Version: 3.1.15p3 Build in accordance with The Perfect Server – Ubuntu 18.04 (Nginx, MySQL, PHP, Postfix, BIND, Dovecot, Pure-FTPD and ISPConfig 3.1)
Test message was finally recieved but after several hours (maybe four). Where can I check and adjust the delay time so it's around 15 minutes?
The delay time of postgrey is 300 seconds unless you altered it manually in /etc/default/postgrey file. The more likely reason for your long delay is that the sending mailserver did not retry to send earlier.
Confirmed that I haven't changed the delay time and I've checked the /etc/default/postgrey file and there is no time entry in it, so default of 300 seconds should be applied. I can see many retries in the mail.log well after 300 seconds has elapsed. However, I also just saw the following, which is repeated with alarming regularity. I think this might be related but not sure how to proceed? Thanks
Also, I just saw this in the mail.log: I sent an email to myself and it is received a few moments later, so local delivery is ok.
This is now fixed. Thanks for your help. The major clue was when I found this thread which has identical symptoms and so first of all I tried adding /etc/systemd/system/postgrey.service with the content he suggested. I restarted postfix and postgrey but I don't think it fixed it, so I tried his other suggested solution, as below: This seemed to do the trick. When I do: I get Where as before I nothing was returned. I do have one or two other issues to resolve before I can put this in production, so you'll probably hear from me again! Thanks again.
