PHP 4.0 Bug #6537: mail() does not seem to handle SMTP multi-line responses

From: mlemos@acm.org Operating system: Windows PHP version: 4.0 Latest CVS (04/09/2000) PHP Bug Type: Misbehaving function Bug description: mail() does not seem to handle SMTP multi-line responses There has been so many people complaining about not being able to send messages with the mail() function on Windows that I decided to investigate. Apparently, it seems that it is not handling SMTP multi-line responses. Multi-line responses may be returned or not depending on the vendor of the SMTP server. The way it works is by returning a - character right after the response code instead of a space. When this is returned, it means that this is not the last response line. So, the SMTP client has to fetch the next response line until it finds the last one that has the same response code followed by a space. I don't use Windows, so I did not want to fix the problem because I would not be able to try the fix. Anyway, it seems that all the fixing that is needed lies within the Ack() function.