I have a droplet with a domain xyz.com but with the email for xyz.com hosted on Gmail. Sendmail works perfectly, except when sending email from my droplet to an @xyz.com address, in which case it gets dumped to a dead.letter file.
Initially I thought that sendmail knows that the server it’s running on is xyz,com and so doesn’t bother sending any messages off-server (to Gmail), but I’ve removed all references to xyz.com from /etc/hosts and /etc/hostname
What can I try next?
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Try to add these two lines to /etc/mail/sendmail.mc
define(`MAIL_HUB', `example.com.')dnl
define(`LOCAL_RELAY', `example.com.')dnl
After that run
sudo sendmailconfig
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