Hello, I'm using Cpanel/CSF with SMTP_BLOCK active.
I have two hosting accounts that must connect to google.com and elasticemail.com to send email.
The first account mysite1 is connecting to google correctly and sending messages, but the second account, the CSF is blocking from connecting to elasticemail.com
My CSF settings are
The SMTP Restrictions from Cpanel is disable.
SMTP_BLOCK = 1
SMTP_ALLOWLOCAL = 1
SMTP_REDIRECT = 0
SMTP_PORTS = 25,465,587
SMTP_ALLOWUSER = cpanel,mysite1,mysite2
SMTP_ALLOWGROUP = mail,mailman
SMTPAUTH_RESTRICT = 0
TCP_IN = 20,21,22,25,53,80,110,143,443,465,587,993,995,2077,2078,2079,2080,2082,2083,2086,2087,2095,2096,5128,49152:65534
TCP_OUT = 20,21,22,25,37,43,53,80,110,113,443,465,587,873,993,995,2086,2087,2089,2703,9090,9000,9001,9002,9003,9004
TCP6_IN = 20,21,22,25,53,80,110,143,443,465,587,993,995,2077,2078,2082,2083,2086,2087,2095,2096
TCP6_OUT = 20,21,22,25,37,43,53,80,110,113,443,465,587,873,993,995,2086,2087,2089,2703
If I disable CSF or remove the ports 465, 587 from SMTP_PORTS the email sending is done correctly by the mysite2 account in elasticemail.com, they are really blocking it.
Can someone help me?