Reported July This is not fetchmail's problem. If this happens, you have a specific portability problem with the code in daemon.

If this doesn't work, try to figure out which other program in your mail path is inserting the blank line and replace that. If you can lend us an account on a kind of server that is not already on this list, please do.

We welcome your code contributions. This answer covers versions of sendmail from 8. This is probably a general networking issue.