Do you know that it's going out with valid headers, a "legal" helo address, and the like? Many mail systems will use these as reasons to reject connections when they're wrong. In the case of bad helo values, often it won't get as far as the spam filter, since that's sent through before the message. If stuff worked before but now doesn't, another question is whether your sending IP is in a range recently blacklisted, if your ISP has been hosting spammers. Whit On Fri, May 21, 2010 at 02:03:04PM -0400, Susan Day wrote: > Hi; > I have an email form that worked fine until now. For some reason, if I send an > email to an email address at a domain that I control, I can receive the email > TTW no problem. However, if I try and push it to, for example, this gmail > account, I never get it. It's not even in the spam filter. What could this be? > TIA, > Susan