Many e-commerce sites do this type of stuff improperly. They should use anThey should only because of spam blocking, but in practice, many don't. The bigger ones have of course mostly figured this out, but for instance, I host a lot of car dealers, and every third-party lead generation system out there displays this behavior, including those maintained by the automakers themselves. Contact forms on the majority of Web sites will also normally display this behavior. Although I now use Reply-To addresses to circumvent this issue myself, I have many forms that still do this that I have coded over the years, and trying to explain to developers why this is necessary is hit or miss.
address from their site as the from with the reply-to header for where you
ar to reply to.
You could setup port forwarding for the users that are blocked so their mailI could if I had a router capable of this, but I don't right now. Sounds like a good way to solve that issue of being blocked. Regardless, some of my customers will set up their E-mail with their ISP for SMTP even when it is not blocked, especially when they have multiple accounts configured in Outlook and it uses a master account for SMTP. I can't stop this from happening. I have actually argued with customers telling them to set it up this way, and if they don't, then I advise them to not call me (anymore) for issues relating to mail delivery. They still call though of course :)
goes out your server. So instead of using port 25 to send mail they could
use port 925 for example. The ISP probably is not blocking this.
Matt
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