Relaying errors from the server indicate your trying to send mail without a password. That is your server requires authentication and you are not supplying it.

Thunderbird stores passwords in a password manager, not as plain text in the registry as some other mail client do. So when you set up your account you enter your user name. When you send mail your asked for the password that goes with that outgoing server and select for it to be stored in the password manager if you want Thunderbird to remember your password.

If your trying to send mail from say MeanPerson@gmail.com using the nifty server then it is going to tell you that you can not do that. You should be using Google SMTP server not the nifty one and expecting it to relay for the other account. I would assume the nifty server will only accept outgoing mail for @Nifty.com mail addresses.

So, what should i do? I am using binay@nifty.com address. SHould i enter this adderss and its password in out going server?

Tools > Account Settings > Outgoing Server (SMTP) select the server name and click on Edit

Description: Nifty Mail Server name: smtp.nifty.com port: 465 connection Security: SSL/TLS Authentication Method: Normal Password User name = full nifty.com email address click on OK

then check the account is using that server. click on the account name in the left column at the bottom on the right side locate 'Outgoing Server (SMTP) click on drop down and select Nifty Mail server.

Click on OK to save Account settings.

Are you using these settings?

Supply info: Help > troubleshooting Information do not select / uncheck: 'Include account names' click on 'copy text to clipboard' paste info into this question. edit/remove all info on fonts and printers but nothing else.

Thank you for discrete reply. I'll check it and come back to you

Sorry, we were unable to send the message. Since the connection to the SMTP server smtp.nifty.com has timed out, it was not possible to send a message. Do try again, please contact your network administrator That is what is i got after inserting the setting that you mentioned.

account1 (none) Local Folders なし 通常のパスワード認証 account2 (pop3) pop.nifty.com:110 なし 暗号化されたパスワード認証 smtp.nifty.com:25 SSL/TLS 通常のパスワード認証 true

bp-ab292b1f-7704-4175-889d-3c1392140207 2014/02/07 bp-a94f4a23-a0bb-441a-9a06-a71372140127 2014/01/27 bp-c3eee3aa-3d5e-41fc-9ee9-90b7c2131003 2013/10/03 bp-dd82e6ca-5c58-41e4-a5f7-73a9e2130709 2013/07/09

Addon Quick Locale Switcher 1.7.8.5 true {25A1388B-6B18-46c3-BEBA-A81915D0DE8F}

accessibility.browsewithcaret true browser.cache.disk.capacity 358400 browser.cache.disk.smart_size.first_run false browser.cache.disk.smart_size.use_old_max false browser.cache.disk.smart_size_cached_value 358400 extensions.lastAppVersion 31.1.1 gfx.direct3d.last_used_feature_level_idx 0 mail.openMessageBehavior.version 1 mail.winsearch.firstRunDone true mailnews.database.global.datastore.id 4c0c9391-571b-4efe-a8a7-b70279cccd5 network.cookie.prefsMigrated true places.database.lastMaintenance 1411097199 places.history.expiration.transient_current_max_pages 78293 places.history.expiration.transient_optimal_database_size 125268294 plugin.importedState true plugin.state.java 0 plugins.update.notifyUser true

Sorry My Thunderbird is in Japanese. Hence its taking twice the time. When I change the language I will paste it soon. I am working on language right now +P

authentification is normal password

re :account2 (pop3) pop.nifty.com:110 なし 暗号化されたパスワード認証 smtp.nifty.com:25 SSL/TLS 通常のパスワード認証 true

I notice that you are using port 25 to send. many servers do not like using port 25.

Try this: change the outgoing server (SMTP) port to 465

Tools > Account Settings > Outgoing Server (SMTP) select the server name and click on 'Edit' button

• Description: Nifty Mail
• Server name: smtp.nifty.com
• port: 465
• connection Security: SSL/TLS
• Authentication Method: Normal Password
• User name = full nifty.com email address
• click on OK
• click on OK to save Account Settings changes.

then retest sending and report on result. If you get any error messages please tell me..word for word.

Omygod. How can i ever thank you. I didnt needed to change the language thanks to you.! Thank you very much.

One more thing. Why did this problem occur in first place. Everything was working then suddenly relay error?? Did someone else use my computer or something.

Thank you again ............:)

It is more than likely that the server is blocking port 25 as part of an anti-spam method they have decided to use. Many servers are doing this now.

i have checked on the internet and there are quite a few reports from people using smtp.nifty.com suddenly having this issue. So I do not think anyone has been messing with your computer.

good to hear you are up and running again.

Port 25 has been for about a decade the port for server to server mail transfer. So mail from say google.com will arrive on port 25 to the NIfty server. Historically it was also the port for sending all mail.

Port 465 as suggested by Toad-Hall is the mail lodgement port for mail clients using SSL. Port 587 is designated for the same thing without SLL security.

This was established in an attempt to reduce the amount of SPAM that was on the internet. When a server connect on port 25 the receiving server does a DNS check to make sure the server is listed in the MX record for the domain. If it is not it will not accept mail. The result is mail coming from domestic computers that have been turned into spam bots is rejected out of hand.

It has taken about a decade for this change to filter down, but the last holdouts are starting to close off this spam source for good. In the long run it can only be good.

ok. thanks