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+ | ======SMTP Service -> Advanced Tab====== | ||
+ | [[Services]] -> [[SMTP Server]] -> Advanced Tab | ||
+ | ====Refuse SMTP Connections from==== | ||
+ | This setting should be rarely needed, and should be normally left blank. It is here for historic purposes. | ||
+ | |||
+ | If you put some text in this box, then VPOP3 will refuse any SMTP connections from clients whose ' | ||
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+ | ====Disable DSN Support==== | ||
+ | Delivery Status Notifications are an SMTP extension ([[http:// | ||
+ | |||
+ | If you check this box, then VPOP3' | ||
+ | |||
+ | ====Don' | ||
+ | According to the standards, the ' | ||
+ | |||
+ | In the ' | ||
+ | |||
+ | Note that VPOP3 will not interpret the % symbol this way, but spammers will still try to use this trick, so, unless you specifically want to allow % characters in email addresses, turning it off will submit VPOP3 to less load from spammers trying it on. Also, some security scanning software may throw a wobbly if it sees that VPOP3 accepts the % symbol, even though it's actually perfectly safe. | ||
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+ | ====Don' | ||
+ | According to the standards, the ' | ||
+ | |||
+ | In the ' | ||
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+ | For obvious reasons this is not widely implemented today, and VPOP3 certainly doesn' | ||
+ | |||
+ | ====Add Date: header field to locally sent messages if it doesn' | ||
+ | If this option is checked, then VPOP3 will automatically add a ' | ||
+ | |||
+ | The Date: header field is one of the few mandatory header fields, so all email sending software should automatically add it, but occasionally you may encounter some bespoke email software which doesn' | ||
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+ | ====Add original recipients to custom header if message delivered to local mailbox==== | ||
+ | If a message is received using SMTP, then the recipients are specified using an SMTP Envelope which contains the addresses of the sender and recipients. When a mail server, such as VPOP3, delivers the message into a user's mailbox the envelope is discarded as it is of no further use. | ||
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+ | In some cases, the mailbox may be accessed by some other software (such as another instance of VPOP3) for delivery to another site with further sorting based on message headers. In this case, BCCd messages can be misdelivered, | ||
+ | |||
+ | Turning this option on will make VPOP3 add the SMTP envelope data as new lines in the message headers beginning with **X-VPOP3-ORIGRCPT**. These can then be used by the onward mail sorting software to see who the message recipients were. The downside is that there may be privacy implications as BCCd recipients are now listed in the message headers. | ||
+ | |||
+ | ====Log Rejected unrecognised recipients==== | ||
+ | The VPOP3 SMTP service will usually reject unknown local recipients with an error message back to the sender. In most cases this is sufficient as it means that the sender is notified, and the message will not generate error messages later. | ||
+ | |||
+ | However, in some cases, administrators may be interested in this, so you can turn this option on to make VPOP3 log the failed recipients into a ' | ||
+ | |||
+ | =====Minger===== | ||
+ | Minger (Mail pINGER) is a [[http:// | ||
+ | |||
+ | As this protocol is authenticated, | ||
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+ | The **Minger Secret** is a ' | ||
+ | |||
+ | VPOP3' |