The best way to overcome this is to set up an alternative 'port' to send your mail through.
By default, email software will set the SMTP 'port to '25', which is the standard port for the SMTP protocol. However our mail service has two alternative ports available that you can send through.
These are: 8025 or 587
You can usually adjust the SMTP port that your software uses under the 'More Options' or 'Advanced' area of the account setup.
If this does not work for you (as possibly these two additional ports are also blocked by your ISP as well), another alternative is to use your ISP's SMTP outgoing server information rather than using the outgoing server provided by this system.
If you are not sure what your ISP's SMTP server information is, try looking at the settings for one of your other existing email accounts.
If that information is not available from within your email client, contact your ISP to find out your SMTP server's address.
Your ISP's SMTP server information will likely follow one of the following formats:
Once you have their outgoing server information, update the outgoing mail server fields only in the email client account settings to use their outgoing server.
User not permitted to relay
The following recipient(s) could not be reached: 554 5.7.1 : End-of-data rejected: user not permitted to relay
If you run accross this error message preventing you from sending emails via webmail, please submit a help request (links at top and bottom of this page) and mention the email address or addresses you receive this error message for.
This type of error may occur because of a broad range of reasons, but most commonly it is when the email service provider has received numerous recent reports of spam coming from your email address. This can happen due to a virus on your system, a hacker using your password to send mail from your account, or if you try to send mass emails from your email account (use the newsletter feature for that, don't do so from your regular email account.)