I am new to sendmail.
My company webserver is A. (My company email server is B. (mail.somedomain.com where A and B have different IPs but same ISP).
My home email server is C. (mail.anotherdomain.com where A and B and C have different IPs but same ISP)
When I use sendmail (php 'mail()' command) to send a message to my work address (from A to B), the postmaster on server A gets an error reply message stating, "Diagnostic-Code: SMTP; 550 you are not allowed to send mail to <myworkaddress>"
When I use sendmail to send a message to myself@Yahoo.com (from A to Yahoo.com), the message flies through without any problems.
When I use sendmail to send a message to my home address (from A to C), the postmaster on A gets the error message again - "Diagnostic-Code: SMTP; 550 you are not allowed to send mail to <Myhomeaddress>"
What sendmail configuration changes do I need to make to avoid this problem? The ISP will not help with sendmail configuration changes.
My company webserver is A. (My company email server is B. (mail.somedomain.com where A and B have different IPs but same ISP).
My home email server is C. (mail.anotherdomain.com where A and B and C have different IPs but same ISP)
When I use sendmail (php 'mail()' command) to send a message to my work address (from A to B), the postmaster on server A gets an error reply message stating, "Diagnostic-Code: SMTP; 550 you are not allowed to send mail to <myworkaddress>"
When I use sendmail to send a message to myself@Yahoo.com (from A to Yahoo.com), the message flies through without any problems.
When I use sendmail to send a message to my home address (from A to C), the postmaster on A gets the error message again - "Diagnostic-Code: SMTP; 550 you are not allowed to send mail to <Myhomeaddress>"
What sendmail configuration changes do I need to make to avoid this problem? The ISP will not help with sendmail configuration changes.