mailgaurd ?
I run a couple of domains/site with them, one dedicated to a forum and the other for a website.
Everything was running fine until 3-4days ago, the forum is suddenly unable to forward mail through the smtp server and errors are being thrown. I've not changed any settings or code before/whilst this occured and today it started working again for a few hours and then reverted back to the same problem again without anything being changed.
I've been talking with my host and they are more or less stateing it forum based but I'm not so sure due to the above.
I've just done some further checking and discovered the e-mail account used has mailgaurd showing on validation results.
Can anyone shed any light on this as I think this maybe a spam filter applied by the host. Could this be the reason the forum is unable to sending notification mails for members reply Posts and PM's all of a sudden?
Added: When sending mail through this same e-mail account using outlook it works fine?
