macOS: linking for sendmail does not work

[akazik]

I've linked mailpit as described, but it doesn't work.

❯ ln -s /opt/homebrew/bin/mailpit sendmail

❯ ls -la sendmail 
lrwxr-xr-x  1 akazik  wheel    25B Jun  5 12:57 sendmail@ -> /opt/homebrew/bin/mailpit

❯ ./sendmail 
INFO[2025/06/05 12:57:21] [smtpd] starting on [::]:1025 (no encryption) 
INFO[2025/06/05 12:57:21] [http] starting on [::]:8025                 
INFO[2025/06/05 12:57:21] [http] accessible via http://localhost:8025/ 
FATA[2025/06/05 12:57:21] listen tcp 0.0.0.0:1025: bind: address already in use 

❯ ./sendmail version
./sendmail v1.25.1 compiled with go1.24.3 on darwin/arm64

❯ mailpit version
mailpit v1.25.1 compiled with go1.24.3 on darwin/arm64

macOS 15.5 @ M1 Mac mini

[axllent]

Thanks for reporting this, I will need to investigate why Mac has this behaviour.

[akazik]

Installed via homebrew, and I found a solution, so no need to hurry for me (though I'd prefer that way).

[axllent]

What solution/workaround did you find?

[akazik]

A shell-script:

#!/bin/sh
/opt/homebrew/bin/mailpit sendmail "$@"

this seems also to work (but I don't trust the parameters passing through either way):

#!/opt/homebrew/bin/mailpit sendmail

[axllent]

I have pushed a fix for this in v1.26.0 which should resolve your issue. Please feel free to reopen this if you are still having issues. Thanks for reporting the bug.