php.ini lists the default sendmail_path as being set to 'sendmail -t'. However if form output is taken and passed to mail(), which contains a \n.\n sequence (maybe \r's too), mail() can effectivly stop transmitting text when only halfway through.

The sendmail(8) manpage explains -i as:

Ignore dots alone on lines by themselves in incoming mes-
sages.  This should be set if you are reading data from a
file.

Therefore consider this a request to change the default sendmail settings for the mail() function.

Thanks;

Steven Fletcher
stevenf@shellnet.co.uk / flec@flec.co.uk