Initial Query

Extract all the email addresses that are invalid from this text file: <foo-bar@example.com>: Domain example.com does not accept mail (nullMX) <noperson628@gmail.com>: host mail.banglemail.com[138.68.190.241] said: 550 5.1.1 <noperson628@gmail.com>: Recipient address rejected: User unknown in virtual alias table (in reply to RCPT TO command) <againredacted@example.info>: host emx.mail.ru[218.62.518.180] said: 550 Message was not accepted -- invalid mailbox. Local mailbox againredacted@example.info is unavailable: user not found (in reply to end of DATA command) <xsz032by05wfk5jpe@mail4you.biz>: host emx.mail.ru[217.69.139.180] said: 550 Message was not accepted -- invalid mailbox. Local mailbox xsz032by05wfk5jpe@mail4you.biz is unavailable: user not found (in reply to end of DATA command) <wontsay@bestpay.com.cn>: host mta-ent.21cn.com[183.56.203.132] said: 543 suspected spams or account(IP) exception (in reply to end of DATA command) <redactedfinally@gmail.com>: host gmail-smtp-in.l.google.com[142.250.27.26] said: 550-5.1.1 The email account that you tried to reach does not exist. Please try 550-5.1.1 double-checking the recipient's email address for typos or

LLM Generation

Query

Output

The following email addresses are indicated as invalid in the provided text: * **noperson628@gmail.com:** Rejected due to being an unknown user. * **againredacted@example.info:** Invalid mailbox, user not found. * **xsz032by05wfk5jpe@mail4you.biz:** Invalid mailbox, user not found. * **redactedfinally@gmail.com:** The email account does not exist. While **foo-bar@example.com** is mentioned, the error suggests the *domain* doesn't accept mail, not necessarily that the specific address is malformed. Similarly, **wontsay@bestpay.com.cn** encountered a suspected spam/exception issue, which might be a temporary block or sending limit rather than the address itself being invalid. These two are less certain cases of address invalidity compared to the four listed above.

Check if all of the following conditions are true:

Check this condition is not true:

Substring Evaluation

Testing if the previous output contains the string 217.69.139.180: False

Final Answer: True

Check this condition is not true:

Substring Evaluation

Testing if the previous output contains the string gmail-smtp-in.l.google.com: False

Final Answer: True

Substring Evaluation

Testing if the previous output contains the string redactedfinally@gmail.com: True

Substring Evaluation

Testing if the previous output contains the string wontsay@bestpay.com.cn: True

Substring Evaluation

Testing if the previous output contains the string xsz032by05wfk5jpe@mail4you.biz: True

Substring Evaluation

Testing if the previous output contains the string againredacted@example.info: True

Substring Evaluation

Testing if the previous output contains the string noperson628@gmail.com: True

Substring Evaluation

Testing if the previous output contains the string foo-bar@example.com: True

Final Answer: True

Initial Query

LLM Generation

Query

Output

The invalid email addresses are: * noperson628@gmail.com * againredacted@example.info * xsz032by05wfk5jpe@mail4you.biz * wontsay@bestpay.com.cn * redactedfinally@gmail.com While foo-bar@example.com has a deliverability problem (nullMX meaning no mail server), the address itself *is* syntactically valid. The question specifically asks for *invalid* addresses. The other addresses are all invalid because they don't correspond to actual mailboxes on their respective servers.

Check if all of the following conditions are true:

Check this condition is not true:

Substring Evaluation

Testing if the previous output contains the string 217.69.139.180: False

Final Answer: True

Check this condition is not true:

Substring Evaluation

Testing if the previous output contains the string gmail-smtp-in.l.google.com: False

Final Answer: True

Substring Evaluation

Testing if the previous output contains the string redactedfinally@gmail.com: True

Substring Evaluation

Testing if the previous output contains the string wontsay@bestpay.com.cn: True

Substring Evaluation

Testing if the previous output contains the string xsz032by05wfk5jpe@mail4you.biz: True

Substring Evaluation

Testing if the previous output contains the string againredacted@example.info: True

Substring Evaluation

Testing if the previous output contains the string noperson628@gmail.com: True

Substring Evaluation

Testing if the previous output contains the string foo-bar@example.com: True

Final Answer: True

Initial Query

LLM Generation

Query

Output

The invalid email addresses are: * **noperson628@gmail.com:** Explicitly stated "Recipient address rejected: User unknown" * **againredacted@example.info:** "invalid mailbox ... user not found" * **xsz032by05wfk5jpe@mail4you.biz:** "invalid mailbox ... user not found" * **redactedfinally@gmail.com:** "The email account that you tried to reach does not exist." While **foo-bar@example.com** receives a bounce, it's due to the *domain* not accepting mail, not necessarily the specific address being invalid. Similarly, **wontsay@bestpay.com.cn** might be a valid address, but the message was rejected due to suspected spam or account/IP exceptions. These issues don't confirm the address itself is invalid.

Check if all of the following conditions are true:

Check this condition is not true:

Substring Evaluation

Testing if the previous output contains the string 217.69.139.180: False

Final Answer: True

Check this condition is not true:

Substring Evaluation

Testing if the previous output contains the string gmail-smtp-in.l.google.com: False

Final Answer: True

Substring Evaluation

Testing if the previous output contains the string redactedfinally@gmail.com: True

Substring Evaluation

Testing if the previous output contains the string wontsay@bestpay.com.cn: True

Substring Evaluation

Testing if the previous output contains the string xsz032by05wfk5jpe@mail4you.biz: True

Substring Evaluation

Testing if the previous output contains the string againredacted@example.info: True

Substring Evaluation

Testing if the previous output contains the string noperson628@gmail.com: True

Substring Evaluation

Testing if the previous output contains the string foo-bar@example.com: True

Final Answer: True

Initial Query

LLM Generation

Query

Output

The following email addresses are invalid based on the error messages: * **noperson628@gmail.com:** "Recipient address rejected: User unknown" * **againredacted@example.info:** "invalid mailbox. Local mailbox ... is unavailable: user not found" * **xsz032by05wfk5jpe@mail4you.biz:** "invalid mailbox. Local mailbox ... is unavailable: user not found" * **redactedfinally@gmail.com:** "The email account that you tried to reach does not exist." While **foo-bar@example.com** bounces, the issue is with the *domain* not accepting mail, not necessarily with the address itself being malformed. Similarly, **wontsay@bestpay.com.cn** was rejected for suspected spam or IP issues, which doesn't confirm the address itself is invalid. The rejection could be due to sending practices or server reputation, rather than the recipient address.

Check if all of the following conditions are true:

Check this condition is not true:

Substring Evaluation

Testing if the previous output contains the string 217.69.139.180: False

Final Answer: True

Check this condition is not true:

Substring Evaluation

Testing if the previous output contains the string gmail-smtp-in.l.google.com: False

Final Answer: True

Substring Evaluation

Testing if the previous output contains the string redactedfinally@gmail.com: True

Substring Evaluation

Testing if the previous output contains the string wontsay@bestpay.com.cn: True

Substring Evaluation

Testing if the previous output contains the string xsz032by05wfk5jpe@mail4you.biz: True

Substring Evaluation

Testing if the previous output contains the string againredacted@example.info: True

Substring Evaluation

Testing if the previous output contains the string noperson628@gmail.com: True

Substring Evaluation

Testing if the previous output contains the string foo-bar@example.com: True

Final Answer: True

Initial Query

LLM Generation

Query

Output

The following email addresses are invalid based on the error messages: * **noperson628@gmail.com:** "Recipient address rejected: User unknown" * **againredacted@example.info:** "invalid mailbox...user not found" * **xsz032by05wfk5jpe@mail4you.biz:** "invalid mailbox...user not found" * **redactedfinally@gmail.com:** "The email account that you tried to reach does not exist" While **foo-bar@example.com** has a "nullMX" error (meaning the domain doesn't accept email), it's formatted correctly. **wontsay@bestpay.com.cn** received a "suspected spam" error which may or may not mean the address itself is invalid; it could be a filtering issue. So, these last two are not necessarily *invalid* addresses in the same way the others are.

Check if all of the following conditions are true:

Check this condition is not true:

Substring Evaluation

Testing if the previous output contains the string 217.69.139.180: False

Final Answer: True

Check this condition is not true:

Substring Evaluation

Testing if the previous output contains the string gmail-smtp-in.l.google.com: False

Final Answer: True

Substring Evaluation

Testing if the previous output contains the string redactedfinally@gmail.com: True

Substring Evaluation

Testing if the previous output contains the string wontsay@bestpay.com.cn: True

Substring Evaluation

Testing if the previous output contains the string xsz032by05wfk5jpe@mail4you.biz: True

Substring Evaluation

Testing if the previous output contains the string againredacted@example.info: True

Substring Evaluation

Testing if the previous output contains the string noperson628@gmail.com: True

Substring Evaluation

Testing if the previous output contains the string foo-bar@example.com: True