On 05/08/2014 03:25 PM, Louis-Philippe Allard wrote:
550 OU-002 (COL0-MC6-F27) Unfortunately, messages from XX.XX.XX.XX weren't sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors.
Hotmail (mail.live.com) tells you all about it in the error message you provided above. For whatever reason, they (Hotmail) are blocking/not accepting email from the IP address block that your IP is in.
A lot of overly simplistic spam filters try to solve the problem of spam by just refusing to accept email from whole swaths of IP addresses. These are often dynamic IP addresses assigned to residential users.
It is likely that another residential user with an IP from your ISP has an infected PC that is spewing spam and/or viruses and Hotmail has just blocked a bunch of IPs on either side of the offending IP and you have been caught in the same net block.
You may be able to send your outgoing email through your ISP's smtp server. You can check on this when you contact them to explain that their IPs are blocked and can they contact Hotmail to get them unblocked. Of course then they may tell you you should not be sending email out from a dynamic IP and that is when you ask them how to relay your email out through their smtp server.
Good luck. -- Andy Dorman -- imp mailing list Frequently Asked Questions: http://wiki.horde.org/FAQ To unsubscribe, mail: imp-unsubscr...@lists.horde.org
