If the domain has a good sending reputation new IPs may experience a faster ramp up time.

A new IP can expect to be fully ramped within a couple of weeks or sooner depending on volume, list accuracy and as long as their junk email complaint rates are kept at a minimum.

IPs not previously used to send email typically don't have any reputation built up in our systems.

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We may not accept email from senders who fail a reverse-DNS lookup.

In some cases legitimate senders advertise themselves incorrectly as a non-internet routable IP when attempting to open a connection to

This change is part of Microsoft's overall Trustworthy Computing Initiative and was made to further reduce the risk of malicious HTML content reaching our users.

One way to ensure that your messages aren't marked as being from an "unknown sender" is to join Return Path's Certification program, a third-party accreditation and reputation service that provides with a list of responsible senders.

This section provides troubleshooting information for senders who are having trouble reaching users by email.

If you are an user looking for support with your account, please visit our end user support page.

Возможно, нужная вам информация уже есть в разделе Часто задаваемые вопросы. Укажите все известные данные, чтобы мы смогли помочь быстрее.

После того как вы отправите письмо, на указанный e-mail придет ответ с номером вашей заявки и сроками ее рассмотрения.

Occasionally, some of the IPs in our MX record may be out of service.