Can't send mail when using mobile broadband

Hi
I am getting quite frustrated as I can't send mail when using my mobile broadband modem! I can receive mail, and surf the internet etc, but mail just wont send!(i get the usual cannot send try later/resend options). I thought this might be an issue with my mobile broadband but have recently reinstalled it. When at home on a wireless network I have no such issues.
Any help appreciated
Charlie

Cgienke wrote:
I am not using a SMTP it is a Pop3 domain name account from freeparking and uses mail.'NAME'.com for incoming and outgoing mail!
Even though your e-mail service uses the same URL for POP3 and SMTP servers, in the software sense you actually do have separate POP3 and SMTP servers, although they may be hosted on the same machine, or the requests are routed via some "smoke and mirrors" to the right host.
It is not related to my ISP at home, which is Virgin media. My mobile broadband provider is 3. I was thinking it might be that I need to change the port settings in mail when using my mobile modem, but don't know what to change them too(or how to do it!) or configure the modem differently but again not sure what to do there!
Check with the freeparking online help to see if it supports port 587 or some such.
Also try Mail's "Connection Doctor" (under the Window menu) when you're away from home to see if that shows anything useful.
Since you can send e-mail from that SMTP server when you're at home but not when you're using your mobile broadband, I think one of two possibilities is likely: (a) Your mobile broadband provider is blocking your attempts to access the freeparking SMTP server and/or port. (b) The freeparking SMPT server for some reason doesn't like being communicated with via your mobile broadband provider. I'd check with each of them to explore these options.
Does your mobile broadband provider have an SMTP server that you can use instead of the freeparking one?
My modem(Huawei E220) is not particularly Mac friendly as it is, and I believe Mail can be quite sensitive when servers don't respond immediately?
Yes. Mail seems to have a fixed time-out value for server responses.

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