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While checking the log files for a website (let's say http://example.com) I manage, I saw that there is lot of spam being addressed to email addresses like genericusername@example.com or othergenericusername@example.com, which do not exist nor have ever existed, and are not listed anywhere on the website. Postfixblocks these emails with Recipient address rejected.

At the same time there are mails being send to info@example.comor administrator@example.com, … e.g. mail addresses that would make sense somehow. Some of which might exist for the website while other might not, and even those that exist, might not be listed anywhere on the website.

Is there a list of default email addresses, like info, contact, admin, administrator, webmaster, that one should enable for each website?

I know I could enable a catch-all address, e.g. info@example.com to which all emails which are send to non-existing addresses are redirected. But I fear that this would result in spam in the inbox.

Basically: Which common addresses should I enable, which could be used for legitimate correspondence, while not gathering too much spam mails?

Update: A client recently applied for an SSL-Certificate and in the application-form from the certificate provider it was stated, that during the process, they will try to contact the technical contact of the domain as well as send an email to some 'standard' addresses: (admin@www.example.com, administrator@www.example.com, webmaster@www.example.com, hostmaster@www.example.com, postmaster@www.example.com, admin@example.com, administrator@example.com, webmaster@example.com, hostmaster@example.com, postmaster@example.com)

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There is not a common or default email address that you should create for your website.

Speaking of experience, I suggest to make any e-mail account you want and publish it to your e-mail account, preferably as an image in order not to being fetched by spam bots.

No service provider or company or institution will try to legitimate communicate you to an email address that they will guess that it might be your "common" email address or the general common email address for website owners (like webmaster@ or info@).

Whoever wants to legitimate contact you, he will first visit your website to find your contact details or even better contact you through your contact form. In other case, if someone tries to guess your email by typing the "common" ones, he will be probably a spammer (human or bot).

Concerning your question update

During the SSL Certification purchase process you will be asked to which of the above email address you mentioned, you want to receive verification email, and future ones concerning your SSL Certification status. You have also to declare the same email address during the CSR encrypted text generation on your server.

They will not just randomly send you an email to one of the "standard" email addresses you mentioned.

So make sure that you have created this email address before you declare it to the registration process. I mostly use ssl@mydomain.com which in most cases is given as an option too during the SSL Certificate registration.

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  • I agree with you, but do you also have an explanation for my update to the question? – Pit Feb 25 '16 at 10:05
  • I updated my answer accordingly, – Vasikos Feb 25 '16 at 10:17
  • From the wording on the form (offline pdf to be send via snail mail/fax) I'm pretty sure they would bulk email all the given addresses and there was no place to define a preferred address for technical contact, only one for the person requesting the certificate. (I made sure one of the addresses is active.) – Pit Feb 25 '16 at 10:23

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