Hi the community,
I am facing with a non received email from a sender, let's call it X. X use laposte.net as email provider.
I have 3 mail addresses, one is google and X can, send me emails. Two other addresses are protected by Proxmox Mail Gateway, one is a paid service, I can not manage the configuration and the last one is a self-hosted email on my own domain. I manage the PMG of the last one.
I found a problem I don't understand with the greylisting. Look at the logs :
As you can see, X emailed me and that was rejected by greylisting I guess. The stmp did another try 10 minutes later. But for this second try, the url has changed and the ip address too.
As my greylistmask4=24, the email shoudn't have been delivered? I never received the email on my 2 addresses protected by Proxmox Mail Gateway. If I deactivate PMG, the mails are received.
What do you think bout this issue?
PS: sorry for my poor english...
I am facing with a non received email from a sender, let's call it X. X use laposte.net as email provider.
I have 3 mail addresses, one is google and X can, send me emails. Two other addresses are protected by Proxmox Mail Gateway, one is a paid service, I can not manage the configuration and the last one is a self-hosted email on my own domain. I manage the PMG of the last one.
I found a problem I don't understand with the greylisting. Look at the logs :
/var/log/mail.log.1:2026-08-07T13:53:00.654501+02:00 pmg postfix/smtpd[118571]: NOQUEUE: reject: RCPT from [B]smtp-outgoing-1802.laposte.net[/B][160.92.124.[B]103[/B]]: 450 4.7.1 <[EMAIL]raphael@domaine.destinataire.example[/EMAIL]>: Recipient address rejected: Service is unavailable (try later); from=<[EMAIL]expediteur@laposte.net[/EMAIL]> to=<[EMAIL]raphael@domaine.destinataire.example[/EMAIL]> proto=ESMTP helo=<smtp-outgoing-1802.laposte.net>/var/log/mail.log.1:2026-08-07T14:03:43.179774+02:00 pmg postfix/smtpd[118765]: NOQUEUE: reject: RCPT from [B]smtp-outgoing-1901.laposte.net[/B][160.92.124.[B]105[/B]]: 450 4.7.1 <[EMAIL]raph@domaine.destinataire.example[/EMAIL]>: Recipient address rejected: Service is unavailable (try later); from=<[EMAIL]expediteur@laposte.net[/EMAIL]> to=<[EMAIL]raph@domaine.destinataire.example[/EMAIL]> proto=ESMTP helo=<smtp-outgoing-1901.laposte.net>As you can see, X emailed me and that was rejected by greylisting I guess. The stmp did another try 10 minutes later. But for this second try, the url has changed and the ip address too.
As my greylistmask4=24, the email shoudn't have been delivered? I never received the email on my 2 addresses protected by Proxmox Mail Gateway. If I deactivate PMG, the mails are received.
What do you think bout this issue?
PS: sorry for my poor english...