One of my clients has to send out emails on port 587. On the server we are using the the ConfigServer Firewall, Mailscanner and Exim and to open port 587 I followed the instructions on the ConfigServer Forum, i.e.:
1.) I included daemon_smtp_ports = 25 : 587 in the 1st text box of the the Advanced Exim Editor
2.) I checked that port 587 is included in the allowed TCP_OUT and TCP6_OUT ports in the csf firewall
I then send a test email from my PC (Thunderbird) using port 587 and no authentication and it was perfectly working. However, it is still not working for my clients.
Also when doing a port scan, it says that port 587 is closed, but perhaps this is due to the csf firewall, which does not like port scanning.
Any suggestions regarding this problem are very much appreciated!
Thank you Gabrielle
1.) I included daemon_smtp_ports = 25 : 587 in the 1st text box of the the Advanced Exim Editor
2.) I checked that port 587 is included in the allowed TCP_OUT and TCP6_OUT ports in the csf firewall
I then send a test email from my PC (Thunderbird) using port 587 and no authentication and it was perfectly working. However, it is still not working for my clients.
Also when doing a port scan, it says that port 587 is closed, but perhaps this is due to the csf firewall, which does not like port scanning.
Any suggestions regarding this problem are very much appreciated!
Thank you Gabrielle