SMTP forwarding not working?

erik.jongen

erik.jongen

New Member
Affected domain: istech.nl which uses SMTP forwarding to port 2525 on ns1.istech.nl
Unfortunately no external email seems to be forwarded by zoneedit.

Tested connection using ping command with the following result:
1620844443976.png

Tested SMTP server using telnet command: telnet ns1.istech.nl 2525
1620844765240.png
SMTP server seems to be functioning ok

Does anybody have any idea how to solve this? Thanks in advance.

Best regards.
Erik Jongen
 
Hi there

at present:

telnet ns1.istech.nl 2525 Trying 83.86.114.67... timeout.

I hope this helps.
 
Hi there Sandy,

Thanks for responding. For me it takes about 15-20 seconds for the 220 message to appear. But it did appear. Just checked again. Did you use a shorter timeout? Otherwise it could be some firewall problem. I will try to check using another connection outside the firewall.
Thanks
Erik
 
Last edited:
Ping times out immediately.. and telnet... times out after 80 seconds.

regards.
 
Finally found solution. Traffic was indeed blocked by other network device. I am sorry to have bothered you. Thanks for your assistance.
 
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