Gmail unreachable | connection timed out

F

friendodevil

Member
Apr 5, 2022
39
3
8
Recently I've started to get connection time outs and email started getting blocked.

Jul 24 10:43:35 jedi postfix/smtp[3533551]: connect to gmail-smtp-in.l.google.com[142.251.5.26]:25: Connection timed out Jul 24 10:43:35 jedi postfix/smtp[3533551]: connect to gmail-smtp-in.l.google.com[2a00:1450:400c:c1b::1b]:25: Network is unreachable Jul 24 10:43:35 jedi postfix/smtp[3533551]: connect to alt1.gmail-smtp-in.l.google.com[2a00:1450:4013:c16::1b]:25: Network is unreachable Jul 24 10:44:05 jedi postfix/smtp[3533551]: connect to alt1.gmail-smtp-in.l.google.com[142.250.153.26]:25: Connection timed out Jul 24 10:44:35 jedi postfix/smtp[3533551]: connect to alt2.gmail-smtp-in.l.google.com[142.251.9.26]:25: Connection timed out

I am able to ping from the Proxmox shell :
root@jedi:~# ping gmail-smtp-in.l.google.com PING gmail-smtp-in.l.google.com (173.194.76.26) 56(84) bytes of data. 64 bytes from ws-in-f26.1e100.net (173.194.76.26): icmp_seq=1 ttl=108 time=74.1 ms 64 bytes from ws-in-f26.1e100.net (173.194.76.26): icmp_seq=2 ttl=108 time=75.2 ms
Root@jedi:~# ping alt1.gmail-smtp-in.l.google.com PING alt1.gmail-smtp-in.l.google.com (142.250.153.27) 56(84) bytes of data. 64 bytes from ea-in-f27.1e100.net (142.250.153.27): icmp_seq=1 ttl=108 time=60.9 ms 64 bytes from ea-in-f27.1e100.net (142.250.153.27): icmp_seq=2 ttl=108 time=61.0 ms

Running PVE 7.2-7, everything else is working fine. How review/modify email configurations?
 
hi,

if you check the journals more thoroughly around the time of the connection timeouts, do you see any error messages related to networking?

please do journalctl -b0 > journal.txt and check the resulting txt file, you can also attach it here for us to take a look at it (you might want to censor some information in that case)
 
oguz said:
hi,

if you check the journals more thoroughly around the time of the connection timeouts, do you see any error messages related to networking?

please do journalctl -b0 > journal.txt and check the resulting txt file, you can also attach it here for us to take a look at it (you might want to censor some information in that case)
Click to expand...
similar information about the connection time out and network unreachable...
Jul 25 22:20:32 jedi postfix/smtp[3521055]: 59EC4320BB1: to=<masked@gmail.com>, relay=none, delay=198459, delays=198399/0.01/60/0, dsn=4.4.1, status=deferred (conne ct to alt2.gmail-smtp-in.l.google.com[2a00:1450:4025:c03::1a]:25: Network is unreacha ble)
 
friendodevil said:
similar information about the connection time out and network unreachable...
Jul 25 22:20:32 jedi postfix/smtp[3521055]: 59EC4320BB1: to=<masked@gmail.com>, relay=none, delay=198459, delays=198399/0.01/60/0, dsn=4.4.1, status=deferred (conne ct to alt2.gmail-smtp-in.l.google.com[2a00:1450:4025:c03::1a]:25: Network is unreacha ble)
Click to expand...
* any other errors or messages, potentially something related to your network interface?

* are you having general connection issues on your server?
 
oguz said:
* any other errors or messages, potentially something related to your network interface?

* are you having general connection issues on your server?
Click to expand...
Networks works great / I hove no other errors from Proxmox or any of the services running in 5 VMs & CTs.

Is there a way to configure another email and/or edits IMAP/SMTP host and ports from the Proxmox shell?
 
Last edited:
Learned a lot as I began to troubleshoot this myself. Many ISPs and VPN providers will block port 25 to combat email spam. Xfinity may be able to unblock it for you temporarily (not without mind-numbingly long conversations with their support team).

Can almost guarantee this port is blocked by default if you're attempting relay from a residential public IP address.
 
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