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Greylisting Article rated 3.0/5.0
You were sent here after seeing a mail of yours being rejected with a message like this: Greylisted for a few minutes, please try again later. (see
Blacklisted Article rated 3.0/5.0
If you came here after receiving an error message such as: 554 5.7.1 Service unavailable; Client host [IP ADDRESS] blocked using <blacklist>; <URL>; Your email to our server was rejected...
Email Address Extensions Article rated 3.0/5.0
Our mail systems support email address extension. You can use a + between your username and the extension. For example, some of our clients choose to put the name of the site they are signing up to i...

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