Emails that forward back to us from external SMTP server
I have a Mail server (FQDN: mail.ours.com) using Postfix and Dovecot, users having email address like user@ours.com. Like many others SMTP server, if user claim that they are from @ours.com, they need to pass sasl or should be in mynetwork parameter according to the restriction setting; so if user do not pass sasl and not having the ip address in mynetwork, they may got some error message like “sender not login”.
The situation is when a user amy@ours.com want to send email to bob@external.com, but Bob do the setting to let his email forward to bob@ours.com. So SMTP server from external.com will interact with ours SMTP server and claim that the sender is from amy@ours.com wanted to send mail to bob@ours.com. After the request, SMTP from external.com will receive the error message from ours SMTP server said that “(amy@ours.com) sender not login”, and Amy will finally got this error message from external.com.
I have no idea how to deal with this situation, very appreciate if anyone can give me the solution or leave some comment, thanks.
postfix mail
asked 25 mins ago
Michael OuyangMichael Ouyang
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I have a Mail server (FQDN: mail.ours.com) using Postfix and Dovecot, users having email address like user@ours.com. Like many others SMTP server, if user claim that they are from @ours.com, they need to pass sasl or should be in mynetwork parameter according to the restriction setting; so if user do not pass sasl and not having the ip address in mynetwork, they may got some error message like “sender not login”.
The situation is when a user amy@ours.com want to send email to bob@external.com, but Bob do the setting to let his email forward to bob@ours.com. So SMTP server from external.com will interact with ours SMTP server and claim that the sender is from amy@ours.com wanted to send mail to bob@ours.com. After the request, SMTP from external.com will receive the error message from ours SMTP server said that “(amy@ours.com) sender not login”, and Amy will finally got this error message from external.com.
I have no idea how to deal with this situation, very appreciate if anyone can give me the solution or leave some comment, thanks.
postfix mail
asked 25 mins ago
Michael OuyangMichael Ouyang
11
New contributor
Michael Ouyang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I have a Mail server (FQDN: mail.ours.com) using Postfix and Dovecot, users having email address like user@ours.com. Like many others SMTP server, if user claim that they are from @ours.com, they need to pass sasl or should be in mynetwork parameter according to the restriction setting; so if user do not pass sasl and not having the ip address in mynetwork, they may got some error message like “sender not login”.
The situation is when a user amy@ours.com want to send email to bob@external.com, but Bob do the setting to let his email forward to bob@ours.com. So SMTP server from external.com will interact with ours SMTP server and claim that the sender is from amy@ours.com wanted to send mail to bob@ours.com. After the request, SMTP from external.com will receive the error message from ours SMTP server said that “(amy@ours.com) sender not login”, and Amy will finally got this error message from external.com.
I have no idea how to deal with this situation, very appreciate if anyone can give me the solution or leave some comment, thanks.
postfix mail
asked 25 mins ago
Michael OuyangMichael Ouyang
11
New contributor
Michael Ouyang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have a Mail server (FQDN: mail.ours.com) using Postfix and Dovecot, users having email address like user@ours.com. Like many others SMTP server, if user claim that they are from @ours.com, they need to pass sasl or should be in mynetwork parameter according to the restriction setting; so if user do not pass sasl and not having the ip address in mynetwork, they may got some error message like “sender not login”.
The situation is when a user amy@ours.com want to send email to bob@external.com, but Bob do the setting to let his email forward to bob@ours.com. So SMTP server from external.com will interact with ours SMTP server and claim that the sender is from amy@ours.com wanted to send mail to bob@ours.com. After the request, SMTP from external.com will receive the error message from ours SMTP server said that “(amy@ours.com) sender not login”, and Amy will finally got this error message from external.com.
I have no idea how to deal with this situation, very appreciate if anyone can give me the solution or leave some comment, thanks.
postfix mail
postfix mail
asked 25 mins ago
Michael OuyangMichael Ouyang
11
New contributor
Michael Ouyang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 25 mins ago
Michael OuyangMichael Ouyang
11
New contributor
Michael Ouyang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 25 mins ago
Michael OuyangMichael Ouyang
11
New contributor
Michael Ouyang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 25 mins ago
Michael OuyangMichael Ouyang
11
asked 25 mins ago
Michael OuyangMichael Ouyang
11
11
New contributor
Michael Ouyang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Michael Ouyang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Michael Ouyang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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