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Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

When I respond to certain messages, I get an error message "unknown host" or "unknown user." Why is this?

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  • Èsì tí ó kẹ́hìn lọ́wọ́ Matt

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Since the latest upgrade to 31.0, there are times when I will receive an e-mail, but when I send a reply, I get a response saying the message is undeliverable because of an unknown user, or an unknown host. These are messages, I'm replying to and have already received, so it's not a case of typing in an incorrect address.

This happens using both my computer and phone. Not sure why this is suddenly happening now, and why only with certain addresses. Any suggestions? Thanks.

Since the latest upgrade to 31.0, there are times when I will receive an e-mail, but when I send a reply, I get a response saying the message is undeliverable because of an unknown user, or an unknown host. These are messages, I'm replying to and have already received, so it's not a case of typing in an incorrect address. This happens using both my computer and phone. Not sure why this is suddenly happening now, and why only with certain addresses. Any suggestions? Thanks.

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my guess is they have invalid replyto information in the header. As it is on two devices, one of which can not run Thunderbird it is certainly not a Thunderbird issue.