My email domain is unable to receive any emails sent from one particular mail server/domain. This looks to be like a configuration problem on the sending end, but if there is any (reasonable) change I can make on our recieving end that would allow these emails to be received, I would make the change here.
I need someone to interpret the SMTP conversation in the attached file and provide configuration change necessary to alow us to recieve emails. Alternatively, if no change on the receiving end is reasonable, what configuration change needs to be changed on the sender end. Don't know what their mail server is , but an SMTP conenection to it sends "220 gateway.senderdomain.lan ESMTP Postfix"