Updated FAQ

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M66B 2021-11-24 12:25:54 +01:00
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FAQ.md
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@ -1276,6 +1276,7 @@ Note that [Google Fi](https://fi.google.com/) is using a VPN too.
SMTP servers can reject messages for [a variety of reasons](https://en.wikipedia.org/wiki/List_of_SMTP_server_return_codes).
Too large messages and triggering the spam filter of an email server are the most common reasons.
* The error *... Socket is closed ...* might be caused by sending a too large message / attachments
* The attachment size limit for Gmail [is 25 MB](https://support.google.com/mail/answer/6584)
* The attachment size limit for Outlook and Office 365 [is 20 MB](https://support.microsoft.com/en-us/help/2813269/attachment-size-exceeds-the-allowable-limit-error-when-you-add-a-large)
* The attachment size limit for Yahoo [is 25 MB](https://help.yahoo.com/kb/SLN5673.html)