English
Chinese (Simplified)
French
German
Italian
Japanese
Russian
Spanish
Vietnamese
Socket connection closed by the other side
-
Greetings All,
I have an issue delivering email to one of my vendor, everytime we try to email vendor we always got Message Delivery Delayed information, but we can receive mail from their side just fine.
We use MDaemon, vendor use Proxmox, both of IP & Domain already in whitelisted
Here's some log from our server :
[50216276] Attempting SMTP connection to <IP>:25 [50216276] Waiting for socket connection... [50216276] * Connection established <IP>:62689 --> <IP>:25 [50216276] Waiting for protocol to start... [50216276] <-- 220 <MX Recipient> ESMTP Proxmox [50216276] --> EHLO <MX Sender> [50216276] Socket connection closed by the other side (how rude!) [50216276] * Socket error 10053 - Connection abort. [50216276] Connection closedHere's some log from vendor server
postfix/smtpd[29244]: connect from <MX Sender>[IP] postfix/smtpd[29203]: connect from <MX Sender>[IP] postfix/smtpd[28664]: connect from <MX Sender>[IP] postfix/smtpd[29244]: lost connection after CONNECT from <MX Sender>[IP] postfix/smtpd[29244]: disconnect from <MX Sender>[IP] commands=0/0 postfix/smtpd[28664]: lost connection after CONNECT from <MX Sender>[IP] postfix/smtpd[28664]: disconnect from <MX Sender>[IP] commands=0/0 postfix/smtpd[29203]: lost connection after CONNECT from <MX Sender>[IP] postfix/smtpd[29203]: disconnect from <MX Sender>[IP] commands=0/0Has anyone experienced something similar? Or is there anything that we and vendor need to check & do ?
Thank You
-
Leigh Staff
Hello,
Do either you or the vendor have a firewall between your two servers? If so, does the firewall show anything in its logs?
-
@Leigh Yes, we have firewall but there's nothing on it's log
when we send email, there's a hit on firewall log, but when receiving no hit on firewall log at all
-
Leigh Staff
Hi @Indra,
You're seeing the issue when sending, right? Have you checked with the vendor to see if they are using a firewall?
