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TurgayK  
#1 Posted : Thursday, March 24, 2022 8:28:54 AM(UTC)
TurgayK

Rank: Newbie

Groups: Registered
Joined: 3/24/2022(UTC)
Posts: 1

Hello,

I am trying to send an email through EASendMail but receive 501 5.5.4 Invalid Address error.
here is my code.
Dim mailAdresses As String = "mymail@company.com"
Dim recipients As AddressCollection = New AddressCollection()
recipients.AddRange(New AddressCollection(mailAdresses))

Dim address As EASendMail.MailAddress = TryCast(recipients(0), EASendMail.MailAddress)
mail.[To].Add(address)

I try also this.
Dim mailAdresses As String = "mymail@company.com"
mail.To = New AddressCollection(mailAdresses)

Nothing helps.
Anyone has any idea?

Thanks.
ivan  
#2 Posted : Thursday, March 24, 2022 10:17:49 PM(UTC)
ivan

Rank: Administration

Groups: Administrators
Joined: 11/11/2010(UTC)
Posts: 1,148

Thanks: 9 times
Was thanked: 54 time(s) in 54 post(s)
did you set your sender address, you can generate a log file with LogFileName property to get more detail, please don't paste your log content here for security.

https://www.emailarchite...-returned-by-smtp-server
TurgayK  
#3 Posted : Friday, March 25, 2022 12:01:31 AM(UTC)
TurgayK

Rank: Newbie

Groups: Registered
Joined: 3/24/2022(UTC)
Posts: 1

I found out what caused the problem and it was the server.
Here is my code.

Dim mailServer As String = "X.X.X.X" '(IP Address)
Dim smtp As SmtpClient = New SmtpClient()
Dim server As SmtpServer = New SmtpServer(mailServer, 25)

server.UseDefaultCredentials = True
server.ConnectType = SmtpConnectType.ConnectTryTLS
smtp.Connect(server)

and if i delete ConnectType section the error turns to "The requested name is valid, but no data of the requested type was found"

Really annoying.
TurgayK  
#4 Posted : Friday, March 25, 2022 12:41:47 AM(UTC)
TurgayK

Rank: Newbie

Groups: Registered
Joined: 3/24/2022(UTC)
Posts: 1

by adding these two lines which is down below solved my problem.
Thanks

server.HeloDomain
server.MailFrom
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