When you send an e-mail with a line containing only a . then the plain text version of the e-mail will break at that point.
We need to escape lines consisting of only a .
This is probably a gen_smtp issue.
This is fixed in the newest gen_smtp.
So, close this issue?
After we merged & tested the fixes in gen_smtp.
Have to check it is both for receiving and sending fixed.
Vagabond/gen_smtp#63 has been closed