snbforumstom
Occasional Visitor
Hi
I have 3 domain on my synology diskstation ds213j with lates DS gui. I run my own DNS server so i created TXT SPF record for each of my domains to protect against spam.
In synology DS mail server Authentication->SPF i enable "Enable SPF verification"
= checked
and "REject SPF softfail". I saved and restarted the server. Then i went to check the server if spammers can use it.
I went to https://www.wormly.com/test_smtp_server and i run the test with real and fake users both could send email to my real user ex. bob.
See the screen shot.
How to fix it so forge emails wont get to my inbox with sender ex. tom@skynetisp.ca
-------------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------
Resolving hostname...
Connecting...
SMTP -> FROM SERVER:
220 skynetisp.ca ESMTP Postfix
SMTP -> FROM SERVER:
250-skynetisp.ca
250-PIPELINING
250-SIZE 104857600
250-ETRN
250-STARTTLS
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
MAIL FROM: bob@skynetisp.ca
SMTP -> FROM SERVER:
250 2.1.0 Ok
RCPT TO: tom@skynetisp.ca
SMTP -> FROM SERVER:
250 2.1.5 Ok
Sending Mail Message Body...
SMTP -> FROM SERVER:
354 End data with .
SMTP -> FROM SERVER:
250 2.0.0 Ok: queued as C34372843
Message completed successfully.
I have 3 domain on my synology diskstation ds213j with lates DS gui. I run my own DNS server so i created TXT SPF record for each of my domains to protect against spam.
In synology DS mail server Authentication->SPF i enable "Enable SPF verification"
= checked
and "REject SPF softfail". I saved and restarted the server. Then i went to check the server if spammers can use it.
I went to https://www.wormly.com/test_smtp_server and i run the test with real and fake users both could send email to my real user ex. bob.
See the screen shot.
How to fix it so forge emails wont get to my inbox with sender ex. tom@skynetisp.ca
-------------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------
Resolving hostname...
Connecting...
SMTP -> FROM SERVER:
220 skynetisp.ca ESMTP Postfix
SMTP -> FROM SERVER:
250-skynetisp.ca
250-PIPELINING
250-SIZE 104857600
250-ETRN
250-STARTTLS
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
MAIL FROM: bob@skynetisp.ca
SMTP -> FROM SERVER:
250 2.1.0 Ok
RCPT TO: tom@skynetisp.ca
SMTP -> FROM SERVER:
250 2.1.5 Ok
Sending Mail Message Body...
SMTP -> FROM SERVER:
354 End data with .
SMTP -> FROM SERVER:
250 2.0.0 Ok: queued as C34372843
Message completed successfully.