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Receiving a delivery failure notice for a suspected guidelines violation

Description

Yahoo! Groups may return email with a bounce message similar to the following:

We are unable to deliver the message from ________ to________ .

Your email was not delivered due to a suspected guidelines violation.

Cause

Yahoo! Groups now requires all incoming email to be authenticated by the

sender's email provider. This is a recent change which has greatly reduced the

amount of spam posted to groups. With these changes, some genuine emails may be

returned for several reasons.

Most common cause - Using an external email client

External email applications (such as Windows Live Mail, Microsoft Outlook,

Mozilla Thunderbird, Eudora, Incredimail, etc.) configured with an incorrect or

non-authenticated SMTP email server may result in delivery failure. This may

impact customers previously able to send email to Yahoo! Groups without issue.

Spammers are known to use non-authenticated email delivery methods when sending

unsolicited messages to Yahoo! Groups. To prevent spam, Yahoo! Groups now

rejects email that is not truly authenticated by the provider affiliated with

your email address.

Note: Several other scenarios are discussed in the resolution below.

Resolution

If you are using an external email application (Outlook, Thunderbird, Eudora,

Incredimail, etc.), alternate webmail service, bulk-mailer, browser add-on, or

scheduled email service to send email:

To ensure your messages are delivered to your groups, learn about using properly

authenticated email to send messages to Yahoo! Groups.

If you are using automatic forwarding to funnel messages through an email

address to Yahoo! Groups:

Automatically forwarded or redirected messages may not be delivered to Yahoo!

Groups. In these cases, the sender's " From " address is retained on the message,

but the message passes through your account instead of being delivered by the

sender's SMTP server directly to Yahoo! Groups. Ask your senders to address

these messages directly to your group's official email address

(______ , ______egroups, etc.). If they are not a member of

your group, feel free to invite them to join.

If you are receiving a delivery failure notice for a message you did not send:

If the failure notice is coming from a group you belong to, it's possible your

account was compromised. In these situations, it's always best to start by

changing your email account password. If you use Yahoo! Mail, learn about

managing your account when unsolicited email is sent to contacts from your

account. For other email providers, please consult your provider's support

resources for further assistance.

It's also possible your email address was spoofed, whether or not you may belong

to a Yahoo! group. " Spoofing " is a tactic commonly used by spammers whereby they

forge the email headers to make it appear as though the message came from a

trusted individual. Unfortunately, there is no industry-wide technical solution

to this problem, and Yahoo! Groups is not always able to prevent email spoofers

from posing as group members. In the case of spoofing, the only solution is to

delete the failure notice you received.

If none of the above solutions address or resolve this issue:

If you have the option and haven't already done so, try re-sending the same

exact message through the webmail service affiliated with your email address.

Webmail messages should always be properly authenticated and deliverable as long

as they do not contain " spammy " content. If you receive the same delivery

failure notification, our spam filters may have detected a " false-positive "

message. Occasionally in our efforts to make Yahoo! Groups a more secure and

spam-free service, we may incorrectly classify some mails as spam. We regret

every such instance.

If you intended to send an email to Groups and received the delivery failure

message due to a possible spam-filtering error, please contact our Customer Care

team.