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this is good
https://support.plesk.com/hc/en-us/articles/115000145989-How-to-restrict-the-field-From-mismatch-for-emails-and-prevent-outbound-mail-spoofing-
hello
as a picture bellow i my plesk mail server, [email protected] could send email to existence users!
how can i block ?
in the picture bellow user : 2221 is not valid but can send email!
please help.
thanks
Hi, i added all of the configurations that explain in threads in another server, but mr dash says, i check the reject_authenticated_sender_login_mismatch on the raw and fresh postfix configuration.
i has been removed "," at the end of smtpd_Sender_restrications but, still i can send email with...
this means there is no way to remediate this?:(
it's a security problem! some services like gmail or yahoo fix this! can you give me a patch or any configuration to solve this for now?
thanks
after a long research and ask questions in other forums, I found a way but it worked Conversely!
smtpd_sender_login_maps=hash:/var/spool/postfix/plesk/virtual
smtpd_sender_restrictions = reject_sender_login_mismatch
by default i should can reject every emails that not listed in...
yes i use 995 in default mode.
i switched to qmail but problem is exists unfortunatly
do you have this problem on your plesk ?
i think i should change a configuration in postfix configurations...
thanks for your explain
i can not disable pop3 option as my customers needs, checking the validity of users just worked when i disabled pop3 options but after that i cannot send any email address and it's return back with relay accesss denied.
i think there is no solution for securing relay on...
thanks trialotto
I add 127.0.0.0/128 , ::1/128 and my server ip/32 in whitelist then i removed the "POP3 before SMTP lock time ... minutes". after that i can not send email with fake email addresses but with the valid email addresses i get the :
'[email protected]' on 6/13/2016 9:28 AM
Server...