SMTP
From apnsGuide
Contents |
Overview
Usage
Logging In
The login mechanism is shared between FTP, SSH, apnscp esprit, SMTP, and IMAP/POP3. FTP, SSH, and e-mail use the same login scheme of user@domain. If your e-mail client does not support using @ in a login, then @ may be swapped out with #. Logging in with just the username will not succeed. You must include the domain. Your mail server is simply your domain name.
Setup in Thunderbird
Setup in Outlook
Setup in Mail.app
Who has access to a Mac and wants to do this? msaladna
Questions
Maximum Message Size
The maximum message length that may be sent is 20,480,000 bytes. File attachments undergo a conversion process called base64-encoding resulting in significantly larger file sizes. For example, a 1 MB file of random data attached to an e-mail turns into a ~1.35 MB file, a 35% increase in size. Bear this in mind when attempting to send large file attachments through e-mail. An e-mail will be rejected if the message size exceeds the minimum accepted length of any relay in the delivery path. This is an extremely important rule; if the receiving side only accepts 2 MB at most, then a 5 MB message will be undeliverable to that recipient.
Troubleshooting
550 User unknown in virtual mailbox table
Once a user goes over quota and remains over quota for more than 5 days the e-mail accounts assigned to the user are disabled. To re-enable the account first make sure the user is back under quota via Disk_Usage_Watcher; adjust via Manage_Users if necessary. Following the basic check, visit Manage_Mailboxes to re-enable the disabled accounts. These accounts are grayed out and italicized. Click on the light bulb in the Actions column to re-enable. Any messages delivered after the account was disabled will remain undeliverable.
Unable to send outgoing e-mail
If you have recently become unable to send outgoing e-mail through your account with Apis, then your ISP has implemented SMTP restrictions. Many ISPs have introduced this policy to curb spam, which adversely affects the quality of the ISP's network. You may attempt to change the outgoing port your e-mail client uses by reading the "554 Relaying Denied" error message/Modifying SMTP port section. If you are still unable to send outgoing mail, then you will need to use your ISP's outgoing mail server to send e-mail.
"554 Relaying Denied" error message/Modifying SMTP port
A "554 Relaying Denied" error is caused by an unauthenticated SMTP request -or- if authentication is enabled, then filtering by your ISP. You must enable outgoing authentication within your e-mail client or change the SMTP port.
- Thunderbird
- Authentication:
- Tools-> Account Settings -> Outgoing Server (SMTP) -> select your SMTP profile on Apis -> Edit-> under Security and Authentication tick Use name and password, User Name field is the same login as for IMAP/POP3.
- SMTP Port Change:
- Tools-> Account Settings -> Outgoing Server (SMTP) -> select your SMTP profile on Apis -> Edit-> change the value of "Outgoing server (SMTP)" to either 587 -or- 465 and select TLS under "Use secure connection".
- Outlook
- Authentication:
- Tools-> Account Settings-> E-mail tab-> select your e-mail profile with Apis-> More Settings ...-> Outgoing Server tab -> tick "My outgoing server (SMTP) requires authentication", select "Use same settings as my incoming mail server".
- SMTP Port Change:
- Tools-> Account Settings-> E-mail tab-> select your e-mail profile with Apis-> More Settings ...-> Advanced tab -> change the value of "Outgoing server (SMTP)" to either 587 -or- 465 and select TLS under "Use the following type of encrypted connection".
Delays Forwarding to Gmail
Some delays may occur when forwarding to a Gmail address. This behavior occurs on Google's end after receipt of the message. We are unclear of Google's reasoning behind quarantining forwarded messages, but if you have an external forward setup to a Gmail account, please realize there may be up to a hour delay in some cases.
