[SOLVED] System Log - Continuous network unreachable for email

[virtualfund]

I have 2 hosts setup and am noticing the following system log cycle through both of them.

Apr 17 14:15:28 proxmox1 postfix/qmgr[1590]: 9240B222E7: from=<myemail@email.com>, size=44076, nrcpt=1 (queue active)
Apr 17 14:15:28 proxmox1 postfix/qmgr[1590]: 730E024006: from=<myemail@email.com>, size=43234, nrcpt=1 (queue active)
Apr 17 14:15:28 proxmox1 postfix/smtp[1156038]: connect to aspmx.l.google.com[2607:f8b0:400e:c03::1a]:25: Network is unreachable
Apr 17 14:15:58 proxmox1 postfix/smtp[1156039]: connect to aspmx.l.google.com[142.250.99.26]:25: Connection timed out
Apr 17 14:15:58 proxmox1 postfix/smtp[1156039]: connect to aspmx.l.google.com[2607:f8b0:400e:c03::1a]:25: Network is unreachable
Apr 17 14:15:58 proxmox1 postfix/smtp[1156039]: connect to alt1.aspmx.l.google.com[2607:f8b0:4023:1004::1b]:25: Network is unreachable
Apr 17 14:15:58 proxmox1 postfix/smtp[1156038]: connect to aspmx.l.google.com[142.250.99.26]:25: Connection timed out
Apr 17 14:15:58 proxmox1 postfix/smtp[1156038]: connect to alt2.aspmx.l.google.com[2607:f8b0:4003:c15::1a]:25: Network is unreachable
Apr 17 14:16:28 proxmox1 postfix/smtp[1156039]: connect to aspmx4.googlemail.com[142.250.152.27]:25: Connection timed out
Apr 17 14:16:28 proxmox1 postfix/smtp[1156038]: connect to alt2.aspmx.l.google.com[64.233.171.27]:25: Connection timed out
Apr 17 14:16:28 proxmox1 postfix/smtp[1156038]: connect to alt1.aspmx.l.google.com[2607:f8b0:4023:1004::1b]:25: Network is unreachable
Apr 17 14:16:29 proxmox1 postfix/smtp[1156038]: 9240B222E7: to=<myemail@email.com>, relay=none, delay=233828, delays=233768/0.01/60/0, dsn=4.4.1, status=deferred (connect to alt1.aspmx.l.google.com[2607:f8b0:4023:1004::1b]:25: Network is unreachable)
Apr 17 14:16:59 proxmox1 postfix/smtp[1156039]: connect to alt2.aspmx.l.google.com[64.233.171.27]:25: Connection timed out
Apr 17 14:16:59 proxmox1 postfix/smtp[1156039]: 730E024006: to=<myemail@email.com>, relay=none, delay=61510, delays=61419/0.01/90/0, dsn=4.4.1, status=deferred (connect to alt2.aspmx.l.google.com[64.233.171.27]:25: Connection timed out)

Under Datacenter > Notifications I have sendmail disabled and setup SMTP to use an SMTP relay sitting in Docker.

I'm not sure why I'm getting spammed with not being able to connect to Google's email when emails should be going to my SMTP relay.

 

[Lukas Wagner]

Do you have any backup jobs that have 'Notification mode' set to 'Auto' or 'Email (Legacy) and an email address configured for a backup job?
See at https://pve.proxmox.com/pve-docs/vzdump.1.html how the '--notification-mode' works.

Hope this helps!

 

[virtualfund]

Took some digging, but I was able to find the solution in this post.