Haecki
New Pleskian
For some days I noticed that the SMTP connection to my server takes very long time to respond to the client (Outlook, Thunderbirt).
Whether a secure or unsecured connection, I ask the server by telnet, I received for some time only after 10 seconds a "welcome" message.
This annoys extremely, since some IP cameras now no mails can send, since these already after 5 seconds the connection again abort.
I thought it was possibly a firewall problem, but I have intensively examined this and can also see in the network monitor immediately the request for sending from my IP address, it seems here the postfix something to brake.
Before rolling out the last update from 14.06. It had worked temporarily
But since yesterday the SMTP is again very slow.
What can be the reason, how can I analyze an error here more?
Whether a secure or unsecured connection, I ask the server by telnet, I received for some time only after 10 seconds a "welcome" message.
This annoys extremely, since some IP cameras now no mails can send, since these already after 5 seconds the connection again abort.
I thought it was possibly a firewall problem, but I have intensively examined this and can also see in the network monitor immediately the request for sending from my IP address, it seems here the postfix something to brake.
Before rolling out the last update from 14.06. It had worked temporarily
But since yesterday the SMTP is again very slow.
What can be the reason, how can I analyze an error here more?